MMMR & Dot & Box and Whisker Plots

Front

What is the median in a set of numbers?

Back

The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

How do you find the median of the following set: 23, 37, 11, 58, 13, 45?

Back

First, arrange the numbers in order: 11, 13, 23, 37, 45, 58. Since there are 6 numbers (even), the median is (23 + 37) / 2 = 30.

Front

What is the mean?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

Calculate the mean of the following numbers: 9, 8, 12, 6, 10.

Back

Mean = (9 + 8 + 12 + 6 + 10) / 5 = 45 / 5 = 9.

Front

What is the range of a set of numbers?

Back

The range is the difference between the highest and lowest values in a set of numbers.

Front

Find the range of the gas mileage for SUVs if the highest mileage is 20 and the lowest is 16.

Back

Range = 20 - 16 = 4.

Front

What is a box plot?

Back

A box plot (or box-and-whisker plot) is a graphical representation of a data set that shows the median, quartiles, and extremes.

Front

What do the whiskers in a box plot represent?

Back

The whiskers in a box plot extend from the box to the smallest and largest values, excluding outliers.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set.

Front

How do you identify the median from a box plot?

Back

The median is represented by the line inside the box of a box plot.