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# Unit 3: Summarizing quantitative data

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## 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.

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### 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!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### 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!
- Effects of shifting, adding, & removing a data pointGet 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!

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

### Learn

### Practice

- Standard deviation of a populationGet 3 of 4 questions to level up!

### Learn

### Practice

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

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Learn

### 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!

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

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Level up on all the skills in this unit and collect up to 1,700 Mastery points!