Data Insights: Table Analysis Flashcards

A table lists test scores by student and subject. To find which subject had the highest average, you would:

Answer: Average each subject's column and compare the means

Comparing column averages identifies the subject with the strongest overall performance.

A statement reads 'every region with population over 1M also had a budget over $10M.' This is verified by:

Answer: Filtering to regions over 1M population and confirming each has a budget over $10M

Restrict to the qualifying population subset and confirm the budget condition for all of them.

When evaluating whether a column's values are 'evenly distributed,' you look for:

Answer: Roughly equal gaps between sorted values rather than clustering

Even distribution means values are spread with similar spacing, not bunched together.

A table includes a 'growth rate' and a 'starting value' column. A high growth rate on a small starting value means:

Answer: The absolute increase may still be small despite the high percentage

A large percentage of a small base can yield a modest absolute change.

To check 'the third-highest salary exceeds $80,000,' the best method is to:

Answer: Sort salaries descending and read the value in the third position

Sorting descending places the third-highest value in the third row for direct reading.

A statement claims a column has 'more values below the median than above it.' Is this typically possible?

Answer: No, by definition the median splits the data roughly in half

The median is the midpoint, so counts above and below are balanced, not lopsided.

If a Table Analysis question's statement cannot be confirmed or denied from the table, you should:

Answer: Mark it as not supported, since unsupported claims are treated as false/No

Claims the table cannot substantiate are judged unsupported rather than true.