# Unit 1: Data and statistics

## About this unit

In statistics, we try to make sense of the world by collecting, organizing, analyzing, and presenting large amounts of data. For example, you may survey your friends about what tv show is most popular, but the small sample size will not give you an accurate idea of what ALL 6th graders like to watch. To do this you must survey a cross section of students from all around the country and all backgrounds. The data can then be statistically analyzed to give a more accurate picture of what tv show is most popular. So let's dive into a discussion of statistics, including box and whisker plots, bar charts, pictographs, line graphs, and dot plots.

### Practice

- Creating frequency tablesGet 3 of 4 questions to level up!
- Creating dot plotsGet 3 of 4 questions to level up!
- Reading dot plots & frequency tablesGet 3 of 4 questions to level up!
- Estimate center using dot plotsGet 3 of 4 questions to level up!

### Practice

- Statistical questionsGet 5 of 7 questions to level up!

### Practice

- Create histogramsGet 3 of 4 questions to level up!
- Read histogramsGet 3 of 4 questions to level up!
- Estimate center using histogramsGet 3 of 4 questions to level up!

### Learn

### Practice

- Calculating the meanGet 3 of 4 questions to level up!
- Calculating the medianGet 3 of 4 questions to level up!
- Calculating the mean: data displaysGet 3 of 4 questions to level up!
- Calculating the median: data displaysGet 3 of 4 questions to level up!

### Learn

### Practice

- Missing value given the meanGet 3 of 4 questions to level up!
- Effects of shifting, adding, & removing a data pointGet 3 of 4 questions to level up!

### Learn

### Practice

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

### Learn

### Practice

- Reading box plotsGet 3 of 4 questions to level up!
- Creating box plotsGet 3 of 4 questions to level up!
- Interpreting quartilesGet 3 of 4 questions to level up!

### Practice

- Mean absolute deviation (MAD)Get 3 of 4 questions to level up!

### Practice

- Comparing data displaysGet 3 of 4 questions to level up!

### Practice

- Shape of distributionsGet 3 of 4 questions to level up!
- Clusters, gaps, & peaks in data distributionsGet 5 of 7 questions to level up!