MoGEA Test Statistics, Probability, and Data Analysis 2

Question 1

What does a scatter plot primarily show?

Accepted Answer

The relationship or correlation between two variables.

Answer

A scatter plot displays data points for two variables to reveal patterns, trends, or correlations between them.

Question 2

If you flip a fair coin twice, what is the probability of getting heads both times?

Accepted Answer

1/4

Answer

P(heads) × P(heads) = 1/2 × 1/2 = 1/4 for two independent coin flips.

Question 3

In a data set, the value that appears most frequently is the:

Accepted Answer

Mode

Answer

The mode is the value that appears most often in a data set.

Question 4

A pie chart shows that 30% of students prefer math and 45% prefer reading. What percentage prefer other subjects?

Accepted Answer

25%

Answer

100% − 30% − 45% = 25% prefer other subjects since all percentages must sum to 100%.

Question 5

A class of 20 students took a test; 8 scored above 80. What is the relative frequency of students scoring above 80?

Accepted Answer

40%

Answer

Relative frequency = 8/20 = 0.40 = 40%.

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