PAPA Data Interpretation & Statistics Flashcards

A histogram differs from a bar graph in that it:

Answer: Represents continuous data with bars touching each other

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

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

Answer: 3/10

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

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

Answer: Median

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

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

Answer: A positive trend

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

What does it mean if two events are mutually exclusive?

Answer: They cannot both occur at the same time

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

A survey of 100 students shows 60 prefer digital books. What percentage prefer print books?

Answer: 40%

If 60% prefer digital, then 100% − 60% = 40% prefer print books.