GMAT Data Insights Practice Quiz Practice Questions - Data Analysis

Question 1

In a two-way table analysis, what does a chi-square test primarily determine?

Accepted Answer

C) The independence of variables

Answer

A) The correlation between variables

Answer

B) The difference between means

Answer

D) The variance within groups

Question 2

When interpreting a scatterplot with a correlation coefficient of -0.85, what can be concluded?

Accepted Answer

B) There is a strong negative linear relationship

Answer

A) There is a strong positive linear relationship

Answer

C) There is no significant relationship

Answer

D) The relationship is non-linear

Question 3

Which of the following is NOT a measure of central tendency?

Accepted Answer

D) Range

Answer

A) Mean

Answer

B) Median

Answer

C) Mode

Question 4

A dataset has a mean of 50 and a standard deviation of 5. Approximately what percentage of values fall between 45 and 55?

Accepted Answer

B) 68%

Answer

A) 34%

Answer

C) 95%

Answer

D) 99.7%

Question 5

In time series analysis, what does seasonality refer to?

Accepted Answer

B) Predictable patterns that repeat over fixed periods

Answer

A) Long-term upward or downward trends

Answer

C) Random fluctuations in the data

Answer

D) Structural breaks in the data

Question 6

When comparing two groups, a p-value of 0.03 suggests:

Accepted Answer

B) A statistically significant difference at the 5% level

Answer

A) No significant difference between groups

Answer

C) A practically important difference

Answer

D) A perfect correlation between variables