Descriptive Statistics Quiz

What is univariate data?

• Data that cannot be measured

• Data with multiple variables

• Data with one variable

• Data with no variables

Which measure of center is calculated by adding all numbers and dividing by the count?

• Median

• Mode

• Range

• Mean

In a data set, which measure of center is least affected by extreme values?

• Range

• Mode

• Median

• Mean

What is the range of a data set?

• The most frequently occurring value

• The difference between the highest and lowest values

• The average of all values

• The middle value in a sorted list

How many modes can a data set have?

• None

• Only one

• One or more

• Exactly two

What does the five-number summary include?

• Minimum, first quartile, median, third quartile, and maximum

• Mean, median, mode, range, and variance

• Mean, median, mode, range, and standard deviation

• Minimum, maximum, mean, median, and mode

What percentage of data is contained within the box of a box plot?

• 75%

• 25%

• 100%

• 50%

What is the purpose of a box plot?

• To determine the range

• To show the distribution of data

• To calculate the mean

• To find the mode

Which value is not part of the five-number summary?

• Median

• Mean

• First quartile

• Maximum

What is the third quartile in a data set?

• The median of the entire data set

• The median of the upper half of the data

• The highest value in the data set

• The median of the lower half of the data