Lesson 4 Measures of Variability

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is a measure of variability that represents the range of the middle 50% of a data set. It is calculated as Q3 - Q1.

Tags

CCSS.6.SP.B.5C

Front

How do you find the interquartile range using a five-number summary?

Back

To find the IQR using a five-number summary, subtract the first quartile (Q1) from the third quartile (Q3): IQR = Q3 - Q1.

Tags

CCSS.6.SP.B.5C

Front

What is the first step to take when attempting to find the IQR?

Back

The first step is to put the list of numbers in order from least to greatest.

Tags

CCSS.6.SP.B.5C

Front

What is the last step to solving for the Mean Absolute Deviation (MAD)?

Back

The last step is to find the mean of the new set of absolute deviations.

Tags

CCSS.6.SP.B.5C

Front

What does Q1 represent in a data set?

Back

Q1, or the first quartile, represents the value below which 25% of the data falls.

Tags

CCSS.6.SP.B.5C

Front

What does Q3 represent in a data set?

Back

Q3, or the third quartile, represents the value below which 75% of the data falls.

Tags

CCSS.6.SP.B.5C

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.

Tags

CCSS.6.SP.B.5C

Front

How do you calculate the range of a data set?

Back

The range is calculated by subtracting the minimum value from the maximum value: Range = Maximum - Minimum.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Front

What is the purpose of finding the Mean Absolute Deviation (MAD)?

Back

The Mean Absolute Deviation (MAD) measures the average distance between each data point and the mean of the data set.

Tags

CCSS.6.SP.B.5C

Front

What is a five-number summary?

Back

A five-number summary includes the minimum, Q1, median, Q3, and maximum of a data set.

Tags

CCSS.6.SP.B.5B