Shape, Center, and Spread Basics

Which of the following best describes the shape of the distribution?

• skewed left

• skewed right

• uniform

• symmetrical

Should we use the mean or the median to represent the center of the data?

Which of the following best describes the shape of the distribution?

• skewed left

• skewed right

• uniform

• symmetrical

Given that the data is symmetric, which pair of measures should be used to represent the data?

• center: median

  spread: standard deviation

• center: mean

  spread: IQR

• center: mean

  spread: standard deviation

• center: median

  spread: IQR

Which summary statistic should be used to compare the two data sets and why?

• The median and the interquartile range because they are normally distributed.

• The median and the interquartile range because they are skewed.

• The mean and the standard deviation because they are normally distributed.

• The mean and the standard deviation because they are skewed.

Which measure of spread should be used to describe the distribution?

• standard deviation

• interquartile range

• range

• median

Which describes the shape of the distribution?

• skewed right

• skewed left

• symmetric

• uniform

Which measure of center will be the smallest?

(Remember which one pulls toward the tail)

• median

• mean

• mode

Describe the shape of the graph.

• skewed

• symmetrical

• uniform

What is the shape of the distribution?

• symmetric

• uniform

• skewed to the right

• skewed to the left