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# Unit: Summarizing quantitative data

#### 0

Possible mastery points

## Measuring center in quantitative data

Practice
Mean, median, and modeGet 5 of 7 questions to level up!
Calculating the meanGet 3 of 4 questions to level up!
Calculating the medianGet 3 of 4 questions to level up!

#### Quiz 1

Level up on the above skills and collect up to 300 Mastery points

## More on mean and median

Practice
Calculating the mean: data displaysGet 3 of 4 questions to level up!
Calculating the median: data displaysGet 3 of 4 questions to level up!
Missing value given the meanGet 3 of 4 questions to level up!
Median & range puzzlersGet 3 of 4 questions to level up!

#### Quiz 2

Level up on the above skills and collect up to 500 Mastery points

## Interquartile range (IQR)

Practice
Interquartile range (IQR)Get 3 of 4 questions to level up!

## Variance and standard deviation of a sample

Practice
VarianceGet 3 of 4 questions to level up!
Sample and population standard deviationGet 3 of 4 questions to level up!

#### Quiz 3

Level up on the above skills and collect up to 400 Mastery points

## Box and whisker plots

Practice
Creating box plotsGet 3 of 4 questions to level up!
Reading box plotsGet 3 of 4 questions to level up!
Interpreting quartilesGet 3 of 4 questions to level up!
Identifying outliersGet 3 of 4 questions to level up!

## Other measures of spread

#### Quiz 4

Level up on the above skills and collect up to 500 Mastery points
Up next for you:

#### Unit test

Level up on all the skills in this unit and collect up to 1700 Mastery points!

### About this unit

This unit covers common measures of center like mean and median. We'll also learn to measure spread or variability with standard deviation and interquartile range, and use these ideas to determine what data can be considered an outlier.