Bunuel
Tables - Math/Medium
The table below summarizes information in several categories about library activity at a regional library network.
| Year | Branch type | Workshops | Digital loans | Study-room bookings | Outreach events | Total visits |
|---|
| 2018 | City | 480 | 42,000 | 17,800 | 4,900 | 168,000 |
| 2018 | Suburban | 260 | 27,600 | 7,900 | 3,200 | 91,000 |
| 2019 | City | 530 | 46,300 | 19,100 | 5,400 | 181,000 |
| 2019 | Suburban | 300 | 30,400 | 8,800 | 3,700 | 97,000 |
| 2020 | City | 610 | 51,700 | 21,600 | 5,900 | 196,000 |
| 2020 | Suburban | 350 | 34,200 | 10,000 | 4,100 | 105,000 |
| 2021 | City | 700 | 57,800 | 24,400 | 6,500 | 214,000 |
| 2021 | Suburban | 420 | 38,900 | 11,600 | 4,800 | 116,000 |
| 2022 | City | 790 | 62,600 | 27,100 | 7,200 | 231,000 |
| 2022 | Suburban | 490 | 43,500 | 13,300 | 5,400 | 126,000 |
| 2023 | City | 880 | 67,900 | 30,200 | 8,100 | 247,000 |
| 2023 | Suburban | 560 | 48,700 | 15,000 | 6,100 | 137,000 |
| 2024 | City | 970 | 71,200 | 33,500 | 9,000 | 263,000 |
| 2024 | Suburban | 640 | 53,100 | 16,700 | 6,700 | 149,000 |
For each of the following statements, select
True if the statement can be verified as true based on the information provided. Otherwise, select
False.
Statement 1:Positive correlation means that two data sets tend to move in the same direction: when one is higher, the other also tends to be higher, and when one is lower, the other also tends to be lower. If the data are viewed as lines, the lines tend to slope up or down together; the more consistently this happens, the stronger the positive correlation.
Negative correlation means that two data sets tend to move in opposite directions: when one is higher, the other tends to be lower. If the data are viewed as lines, one line tends to slope up while the other slopes down, and vice versa; the more consistently this happens, the stronger the negative correlation.
For City branches, sorting the table by study-room bookings shows that total City visits increase along with study-room bookings each year. Since the two measures consistently increase together, this indicates a strong positive correlation between City study-room bookings and total City visits.
Answer:
TrueStatement 2:For total City visits, the values are:
168,000, 181,000, 196,000, 214,000, 231,000, 247,000, 263,000
Since there are 7 values, the median is the 4th value:
Median of total City visits = 214,000
For total Suburban visits, the values are:
91,000, 97,000, 105,000, 116,000, 126,000, 137,000, 149,000
Since there are 7 values, the median is the 4th value:
Median of total Suburban visits = 116,000
The difference between the two medians is:
214,000 - 116,000 = 98,000
Since 98,000 is more than 95,000, the statement can be verified as true.
Answer:
TrueStatement 3:The range of digital loans is:
71,200 - 27,600 = 43,600
The range of outreach events is:
9,000 - 3,200 = 5,800
Eight times the range of outreach events is:
8 * 5,800 = 46,400
Since 43,600 is not more than 46,400, the statement is false.
Answer:
FalseTakeawayFor GMAT table questions, first identify exactly which rows and columns each statement is using. A statement may refer to only one category, to a comparison between two categories, or to values across the full table. Sorting the relevant column can make patterns, rankings, and extreme values much easier to verify.
What This Question TestsThis question tests a GMAT math-related table question involving data interpretation, filtering by category, and verifying statements from tabular data. More specifically, it tests the concept of correlation and statistical measures such as median and range.