PAPA PAPA Data Interpretation & Statistics 3

Question 1

A histogram differs from a bar graph in that it:

Accepted Answer

Represents continuous data with bars touching each other

Answer

Histograms display the frequency of continuous data in intervals, with no gaps between bars.

Question 2

If a bag has 3 red and 7 blue marbles, what is the probability of randomly picking a red marble?

Accepted Answer

3/10

Answer

Probability = favorable outcomes ÷ total outcomes = 3 ÷ (3+7) = 3/10.

Question 3

Which statistic best describes the center of a skewed data distribution?

Accepted Answer

Median

Answer

The median is preferred for skewed distributions because it is not distorted by extreme values the way the mean is.

Question 4

A line graph shows reading scores increasing each year from 2018 to 2023. This pattern is best described as:

Accepted Answer

A positive trend

Answer

Consistently increasing values over time represent a positive trend in the data.

Question 5

What does it mean if two events are mutually exclusive?

Accepted Answer

They cannot both occur at the same time

Answer

Mutually exclusive events cannot occur simultaneously; if one happens, the other cannot.

(PAPA) Pre-service Academic Performance Assessment Practice Test