Data & Statistics Review Questions

Front

What part of a box and whisker plot represents 50% or half of the data?

Back

The box

Front

Is the question 'What is your personal favorite flavor of ice cream?' statistical or non-statistical?

Back

Non-Statistical

Front

What are the lower and upper quartiles of the data set: 4, 6, 8, 9, 9, 11, 12, 13, 15, 19, 20?

Back

Q1 = 8, Q3 = 15

Front

In a histogram showing the ages of family cars, what age range do most families have?

Back

3-4 years old

Front

What is the mode for the data set: 3, 4, 7, 6, 8, 7, 9, 3, 7, 4?

Back

7

Front

What is a box and whisker plot used for?

Back

To display the distribution of a data set based on a five-number summary: minimum, first quartile, median, third quartile, and maximum.

Front

Define 'mode' in statistics.

Back

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

Front

What does a histogram represent?

Back

A histogram represents the frequency distribution of numerical data.

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest.

Front

What are quartiles?

Back

Quartiles are values that divide a data set into four equal parts.