10.1 Measures of the Center and Variation

Front

What is the median of the following set of numbers: 3, 5, 7, 4, 3, 1?

Back

3.5

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

Find the median of the following set of numbers: 5, 6, 3, 9, 0, 4, 1, 2, 7.

Back

4

Front

What is the Interquartile Range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

Find the IQR of the following test grades: 100, 80, 70, 90, 100.

Back

25

Front

What is the mode of the following set of numbers: 4, 5, 4, 3, 5, 1, 6?

Back

4 and 5

Front

How do you find the median of a data set with an even number of values?

Back

Add the two middle numbers and divide by 2.

Front

What is the range of a data set?

Back

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

Front

Find the mode of the following set of numbers: 1, 2, 2, 3, 4, 4, 4, 5.

Back

4

Front

What does it mean if a data set has no mode?

Back

It means that no number appears more than once in the data set.