GMAT Data Insights – Mock Test

Posted 2026-05-02::Updated 2026-05-02::3592 words:: #gmat, #data-insights, #mock-test

GMAT Data Insights – Mock Test

This mock test covers the Data Insights section of the GMAT Focus Edition. It consists of Graphs & Tables, Table Analysis, Two-Part Analysis, and Multi-Source Reasoning questions designed to replicate real exam conditions.

Instructions: Answer all questions before revealing the answers at the bottom of the page.

Question 1 — Graphs & Tables

Internet Survey on Depression Treatments

The graphic above displays results of an Internet survey on the effectiveness of treatments for depression. The vertical axis (F) represents the fraction of respondents who considered a given treatment to be effective. The horizontal axis (P) represents the fraction of respondents who tried a given treatment.

Sub-question 1: Based on the graphic, which treatment was considered both the most effective and tried by the most respondents?

A) Journaling
B) Massage therapy
C) Light therapy
D) Meditation
E) Exercise

Sub-question 2: Among the treatments tried by more than half of all respondents (P > 0.5), which was considered the least effective?

A) Fish oil
B) Journaling
C) Caffeine

Question 2 — Table Analysis

The table below shows the number of businesses and jobs within each economic sector of a particular city.

Economic Sector	Number of businesses	Percent of total businesses	Number of jobs	Percent of total jobs
Construction	443	8.0%	2,368	3.9%
Finance	398	7.2%	2,958	4.9%
Government	292	5.3%	8,742	14.5%
Manufacturing	214	3.9%	8,012	13.2%
Miscellaneous	272	4.9%	1,444	2.4%
Retail Trade	1,380	25.0%	11,845	19.6%
Services	2,040	37.0%	19,502	32.2%
Transportation	185	3.4%	2,346	3.9%
Wholesale Trade	291	5.3%	3,279	5.4%
Total	5,515	100%	60,496	100%

For each of the following statements, select Yes if the statement is true based on the information provided, or No if it cannot be determined or is false.

Statement	Yes / No
The sector with the greatest number of businesses has the greatest number of jobs.
The sector with the least number of businesses has the least number of jobs.
There are two economic sectors that together comprise over half of all jobs in the city.

Question 3 — Table Analysis

The table below displays data on Brazilian agricultural products in 2009.

Commodity	Production, world share (%)	Production, world rank	Exports, world share (%)	Exports, world rank
Coffee	40	1	32	1
Orange juice	56	1	82	1
Sugar	21	1	44	1
Beef	16	2	22	1
Soybeans	27	2	40	2
Chickens	15	3	38	1
Corn	8	4	10	2
Pork	4	4	12	4
Cotton	5	5	10	4

For each of the following statements, select Yes if the statement is true based on the information provided, or No if it cannot be determined or is false.

Statement	Yes / No
No individual country produces more than one-fourth of the world's sugar.
If Brazil produces less than 20% of the world's supply of any commodity listed in the table, Brazil is not the world's top exporter of that commodity.
Of the commodities in the table for which Brazil ranks first in world exports, Brazil produces more than 20% of the world's supply.

Question 4 — Two-Part Analysis

Read the following excerpt carefully, then answer the two-part question below.

For zoologists studying the behavior of certain species of birds, the critical importance of observing the birds in those species' morefa during the annual breeding season is obvious. Such observation allows researchers to study not only the courtship displays of many different individuals within a species, but also the species' social hierarchy. Moreover, since some species repeatedly return to the same morefa, researchers can study changes in group dynamics from year to year. The value of observing a morefa when the birds are not present, however — such as prior to their arrival or after they have abandoned the area to establish their nests — is only now becoming apparent.

Based on the definition of the term morefa that can be inferred from the passage, identify which activity must happen in a location for it to be a species' morefa, and which activity must NOT happen in that location.

Make only two selections, one in each column.

Activity	Must happen	Must NOT happen
A) Occupying the location only once per year
B) Occupying the location multiple times
C) Establishing nests
D) Gathering together with members of their own species
E) Competing territorially with members of other species

Question 5 — Two-Part Analysis

Loan X has a principal of $10,000x and a yearly simple interest rate of 4%. Loan Y has a principal of $10,000y and a yearly simple interest rate of 8%. Loans X and Y will be consolidated to form Loan Z with a principal of $(10,000x + 10,000y) and a yearly simple interest rate of r%, where:

r = (4x + 8y) / (x + y)

In the table below, select a value for x and a value for y corresponding to a yearly simple interest rate of 5% for the consolidated loan. Make only two selections, one in each column.

X	Y	Value
		21
		32
		51
		64
		81
		96

Question 6 — Multi-Source Reasoning

Read the two passages below, then answer the three questions that follow. The third question also refers to the additional scenario provided.

Economist

Do expenditures on road construction projects represent good investments for communities? The taxpaying public will never know because community planners rarely analyze road projects as investments. The benefits that local residents will receive from a new or improved road, such as increased efficiency, fewer accidents, and reduced vehicle operating costs, as well as the potential regional impacts on jobs, population, and income, should be measured. These benefits should then be compared with the total construction costs of the project, such as planning and design, land purchases, construction, and costs for moving utility lines. Only then will any investment in building or improving roads be made with reasonable confidence.

Ecologist

Community planners should consider the full range of ecological effects of any road construction projects, including pollution, vegetation destruction, habitat fragmentation, and soil erosion. The scale of the effects varies with the size of the project. Evaluations based on only a few species or resources may be adequate for small projects, but the construction of several highway systems can together alter entire regions, disrupting migratory pathways and other ecosystem processes. These effects may be augmented by the conversion of land to industrial or residential use that usually accompanies road building. Once all of the environmental considerations have been evaluated, planners should proceed with a proposed road construction project only if it will not damage sensitive ecosystems or if suitable mitigation measures can be implemented.

Sub-question 1: Based on the information given, which one of the following can be most logically inferred?

A) The ecologist faults community planners generally for not considering the effect of converting land to industrial or residential use.
B) The economist would allow road construction to proceed even if it would threaten sensitive ecosystems.
C) Both the economist and ecologist offer guidance for planners who are considering whether to undertake road construction projects.
D) Both the economist and the ecologist consider the regional economic impacts of road construction projects.
E) Neither the economist nor the ecologist provides clear criteria for determining whether a road project should be undertaken.

Sub-question 2: For each of the following statements, select Yes if the statement is supported by the information provided. Otherwise select No.

Statement	Yes / No
The economist is more intent on endorsing road construction projects than the ecologist is.
The economist and the ecologist are both concerned with the criteria on which community planners base decisions.
The ecologist is concerned with how road projects can affect the quality of life within communities, whereas the economist is not.

Additional scenario for Sub-question 3:

Community planners are evaluating whether to build a new road that is projected to cost $2.0 million to construct and provide $2.5 million in overall benefit to the region but that will threaten a sensitive local ecosystem.

Sub-question 3: In the columns, select Acceptable for each detail that would make the new road acceptable under the standards provided by both the economist and the ecologist. Otherwise, select Not acceptable.

Detail	Acceptable	Not acceptable
The road's planned route could be altered to avoid the sensitive ecosystem at no additional cost.
The road would provide a significant economic benefit to neighboring communities.
Mitigating the threat to the sensitive ecosystem would cost an additional $1 million.

Question 7 — Multi-Source Reasoning

Read the three emails below, then answer the question that follows.

Email 1 — January 15, 10:46 a.m. (from administrator)

Yesterday was the deadline for our receipt of completed surveys from doctors who were invited to participate in the Medical Practice Priorities Survey. Did we get enough returns from this original group of invitees to get reliable statistics? Do we need to invite additional participants?

Email 2 — January 15, 11:12 a.m. (from project coordinator, in response to Email 1)

Altogether we got exactly 350 actual survey completions. We need at least 700 and were hoping for even more, so we plan to invite a second group to participate. Both the results from this first group and other research indicates that with this type of survey and this type of participants there is about a 40 percent probability that any given invitee will submit the completed survey in the time we'll allow. (Obviously that doesn't mean that if we invited 1,000 we'd necessarily get at least 400, so we need to think in terms of the risks of getting too few returns or exceeding the budget.) All of the participants who submitted their surveys by the deadline will get the $50 payment we promised. What is our total budget for compensation to participants?

Email 3 — January 15, 1:54 p.m. (from administrator, in response to Email 2)

The budget we allocated for compensation to those who complete and submit the Medical Practice Priorities Survey is $45,000. We will honor our commitment to pay $50 to each participant — in the second group as well as the first — who completes the survey and submits it by the deadline we specify when we invite them to participate. However, we will need to try not to exceed the total amount that is budgeted for this purpose.

Consider each of the following statements. Does the information in the three emails support the inference as stated? Select Yes or No for each.

Statement	Yes / No
The administrator is unwilling to invite as many participants in the second group as were invited in the first group.
The project coordinator does not expect to be able to meet the goal for numbers of completed surveys received.
The administrator is willing to accept some risk of exceeding the budget for compensating participants.

Question 8 — Graphs & Tables

Flowchart Algorithm

The flowchart above represents a mathematical algorithm that takes two positive integers, a and b, as inputs and produces a value T as output.

Sub-question 1: If 24 and 35 are entered as the values for a and b respectively, what is the first nonzero value of T?

A) 24
B) 48
C) 96
D) 192
E) 384

Sub-question 2: If 35 and 27 are entered as the values for a and b respectively, after the process b = b/2 is completed for the second time, what is the value of b?

A) 3
B) 6
C) 12
D) 13
E) 26

Question 9 — Table Analysis

A physician has instructed a patient with a strong allergic reaction to mold to record the relationship between his activities and the severity of his allergy symptoms experienced through the night for a period of one week. Each day, within three hours of going to sleep, the patient would perform activities intended to reduce the severity of his allergy symptoms.

Day	Drank hot tea	Took Allergy Pill X	Used nasal irrigation device	Slept with window open	Severity of allergy symptoms
1	yes	no	yes	yes	mild
2	yes	no	no	yes	mild
3	yes	no	yes	no	severe
4	yes	yes	no	no	none
5	no	yes	yes	yes	mild
6	no	yes	yes	no	severe
7	no	no	no	yes	mild

For each of the following statements, select Yes if the statement is true based on the information provided, or No if it cannot be determined or is false.

Statement	Yes / No
The patient never experienced severe allergy symptoms when he took Allergy Pill X.
The patient experienced mild allergy symptoms whenever he slept with the window open.
The patient experienced only mild symptoms whenever he drank hot tea and used a nasal irrigation device.

Question 10 — Two-Part Analysis

Natalya put 14 blue marbles, 14 red marbles, and no other marbles into 3 empty cups:

Cup A: 2 blue marbles and 6 red marbles
Cup B: 6 blue marbles and 4 red marbles
Cup C: 6 blue marbles and 4 red marbles

After this, Dmitry will randomly pick three marbles, one from each cup. In the table, select the probability that all three marbles are blue and the probability that all three marbles are red. Make only two selections, one in each column.

All blue	All red	Probability
		0.090
		0.120
		0.125
		0.150
		0.250
		0.500

More questions coming soon.

Answer Key

▶ Reveal Answers

Question 1 — Source

Sub-question	Answer	Difficulty
Sub-question 1	E) Exercise — The dot for exercise is positioned furthest to the right (highest P — most tried) and highest on the vertical axis (highest F — most effective).	Easy
Sub-question 2	C) Caffeine — Among treatments with P > 0.5, caffeine sits the lowest on the effectiveness (F) axis, meaning many people tried it but few found it effective.	Easy

Question 2 — Source

Statement	Answer	Difficulty
The sector with the greatest number of businesses has the greatest number of jobs.	Yes — Services has both the most businesses (2,040) and the most jobs (19,502).	Medium
The sector with the least number of businesses has the least number of jobs.	No — Transportation has the fewest businesses (185), but Miscellaneous has the fewest jobs (1,444). These are different sectors.	Medium
There are two economic sectors that together comprise over half of all jobs in the city.	Yes — Retail Trade (19.6%) + Services (32.2%) = 51.8% of total jobs.	Medium

Question 3 — Source

Statement	Answer	Difficulty
No individual country produces more than one-fourth of the world's sugar.	Yes — Brazil is the #1 sugar producer at only 21%. Since even the top producer is below 25%, no country can exceed one-fourth of world sugar production.	Hard
If Brazil produces less than 20% of the world's supply of any commodity, Brazil is not the world's top exporter of that commodity.	No — Brazil produces only 16% of beef and 15% of chickens (both under 20%), yet ranks #1 in exports for both. These are direct counterexamples.	Hard
Of the commodities for which Brazil ranks first in world exports, Brazil produces more than 20% of the world's supply.	No — Brazil ranks #1 in exports for coffee, orange juice, sugar, beef, and chickens. However, beef (16%) and chickens (15%) are both below 20% production share, disproving the statement.	Hard

Question 4 — Source

Column	Answer	Difficulty
Must happen	D) Gathering together with members of their own species — The passage describes researchers studying courtship displays and social hierarchy in the morefa, both of which require birds of the same species to be present together.	Hard
Must NOT happen	C) Establishing nests — The passage explicitly states that birds abandon the morefa to establish their nests elsewhere, making nest-building incompatible with the morefa by definition.	Hard

Common trap: Option B (occupying the location multiple times) is tempting because the passage says "some species repeatedly return." However, the key word is some — not all species do this, so it cannot be a required condition.

Question 5 — Source

Column	Answer	Difficulty
X	96	Medium
Y	32	Medium

Explanation: Set r = 5 and solve: 5 = (4x + 8y) / (x + y) → 5x + 5y = 4x + 8y → x = 3y. Only x = 96 and y = 32 satisfy this 3:1 ratio among the given values.

Question 6 — Source

Sub-question	Answer	Difficulty
Sub-question 1	C) Both the economist and ecologist offer guidance for planners considering road construction. The economist advises measuring costs vs. benefits; the ecologist advises evaluating ecological impact. Both provide clear criteria.	Medium

Sub-question 2:

Statement	Answer	Difficulty
The economist is more intent on endorsing road construction projects than the ecologist is.	No — Neither passage endorses road construction outright. Both simply provide criteria for planners to consider.	Medium
The economist and the ecologist are both concerned with the criteria on which community planners base decisions.	Yes — Both passages explicitly address what planners should evaluate before proceeding with a road project.	Medium
The ecologist is concerned with how road projects can affect the quality of life within communities, whereas the economist is not.	No — The economist also addresses quality-of-life factors such as efficiency, accidents, and vehicle costs.	Medium

Sub-question 3:

Detail	Answer	Difficulty
The road's planned route could be altered to avoid the sensitive ecosystem at no additional cost.	Acceptable — Rerouting avoids ecosystem damage (satisfying the ecologist) and at no extra cost the benefit ($2.5M) still exceeds cost ($2.0M) (satisfying the economist).	Medium
The road would provide a significant economic benefit to neighboring communities.	Not acceptable — Economic benefit alone does not satisfy the ecologist's requirement that the sensitive ecosystem not be damaged or mitigated.	Medium
Mitigating the threat to the sensitive ecosystem would cost an additional $1 million.	Not acceptable — Mitigation would satisfy the ecologist, but total cost would rise to $3.0M, exceeding the $2.5M benefit — failing the economist's cost-benefit standard.	Medium

Question 7 — Source

Statement	Answer	Difficulty
The administrator is unwilling to invite as many participants in the second group as were invited in the first group.	No — The administrator says to invite "as many as you think appropriate" — there is no expressed unwillingness to invite the same or larger number.	V. Hard
The project coordinator does not expect to be able to meet the goal for numbers of completed surveys received.	No — The coordinator presents the 40% probability and discusses risks of both too few returns and exceeding budget, but never states an expectation of failing to meet the goal.	V. Hard
The administrator is willing to accept some risk of exceeding the budget for compensating participants.	Yes — The administrator says "we will need to try not to exceed" the budget, implying the possibility of exceeding it is accepted.	V. Hard

Question 8 — Source

Sub-question	Answer	Difficulty
Sub-question 1 (first nonzero T with a=24, b=35)	A) 24 — Enter the flowchart: T=0, b=35 is odd, so T = T + A = 0 + 24 = 24. That is the first nonzero value of T.	Hard
Sub-question 2 (value of b after b=b/2 is done twice, with a=35, b=27)	B) 6 — b=27 is odd → b=26 → b=b/2 → b=13 (first time). b=13 is odd → b=12 → b=b/2 → b=6 (second time).	Hard

Question 9 — Source

Statement	Answer	Difficulty
The patient never experienced severe allergy symptoms when he took Allergy Pill X.	No — On Day 6 the patient took Allergy Pill X and still experienced severe symptoms.	Easy
The patient experienced mild allergy symptoms whenever he slept with the window open.	Yes — The patient slept with the window open on Days 1, 2, 5, and 7, and experienced mild symptoms on all four days.	Easy
The patient experienced only mild symptoms whenever he drank hot tea and used a nasal irrigation device.	No — Both conditions were met on Days 1 and 3. Day 1 was mild, but Day 3 was severe.	Easy

Question 10 — Source

Column	Answer	Difficulty
All blue	0.090 — P(blue from A) × P(blue from B) × P(blue from C) = 2/8 × 6/10 × 6/10 = 9/100 = 0.090	Medium
All red	0.120 — P(red from A) × P(red from B) × P(red from C) = 6/8 × 4/10 × 4/10 = 12/100 = 0.120	Medium

Difficulty Overview

#	Question	Type	Difficulty
1	Depression treatments survey	Graphs & Tables	Easy
2	City economic sectors	Table Analysis	Medium
3	Brazilian agricultural products	Table Analysis	Hard
4	Morefa bird behavior	Two-Part Analysis	Hard
5	Loan consolidation interest rate	Two-Part Analysis	Medium
6	Road construction economist vs ecologist	Multi-Source Reasoning	Medium
7	Survey completion emails	Multi-Source Reasoning	V. Hard
8	Flowchart algorithm	Graphs & Tables	Hard
9	Patient allergy symptoms	Table Analysis	Easy
10	Marble probability	Two-Part Analysis	Medium