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# Unit: Module 2: Descriptive statistics

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Possible mastery points

## Topic A: Lesson 1: Dot plots and histograms

Practice
Creating dot plotsGet 3 of 4 questions to level up!
Reading dot plots & frequency tablesGet 3 of 4 questions to level up!
Create histogramsGet 3 of 4 questions to level up!
Read histogramsGet 3 of 4 questions to level up!

## Topic A: Lesson 1: Box plots and shape

Practice
Creating box plotsGet 3 of 4 questions to level up!
Reading box plotsGet 3 of 4 questions to level up!
Shape of distributionsGet 3 of 4 questions to level up!

#### Quiz 1

Level up on the above skills and collect up to 700 Mastery points

## Topic A: Lesson 2: Describing the center of a distribution

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!

## Topic A: Lesson 3: Estimating centers and interpreting the mean as a balance point

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!

#### Quiz 2

Level up on the above skills and collect up to 700 Mastery points

## Topic B: Lesson 4: Summarizing deviations from the mean

Practice
Comparing data distributionsGet 3 of 4 questions to level up!
Comparing center and spreadGet 5 of 7 questions to level up!
Mean absolute deviation (MAD)Get 3 of 4 questions to level up!

## Topic B: Lessons 5-6: Standard deviation and variability

#### Quiz 3

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

## Topic B: Lesson 7: Measuring variability for skewed distributions (interquartile range)

Practice
Interquartile range (IQR)Get 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!

## Topic B: Lesson 8: Comparing distributions

Practice
Comparing distributionsGet 3 of 4 questions to level up!
Comparing data displaysGet 3 of 4 questions to level up!

#### Quiz 4

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

## Topic C: Lessons 9-10: Bivariate categorical data

Practice
Create two-way frequency tablesGet 3 of 4 questions to level up!
Read two-way frequency tablesGet 3 of 4 questions to level up!
Create two-way relative frequency tablesGet 3 of 4 questions to level up!
Read two-way relative frequency tablesGet 3 of 4 questions to level up!

## Topic C: Lesson 11: Conditional relative frequencies and association

Practice
Interpret two-way tablesGet 3 of 4 questions to level up!
Trends in categorical dataGet 3 of 4 questions to level up!

#### Quiz 5

Level up on the above skills and collect up to 600 Mastery points

## Topic D: Lessons 12-13: Relationships between two numerical variables

Practice
Constructing scatter plotsGet 3 of 4 questions to level up!

## Topic D: Lesson 14: Modeling relationships with a line

Practice
Eyeballing the line of best fitGet 3 of 4 questions to level up!
Describing trends in scatter plotsGet 3 of 4 questions to level up!

#### Quiz 6

Level up on the above skills and collect up to 600 Mastery points

## Topic D: Lessons 15-18: Residuals

Practice
Calculating and interpreting residualsGet 3 of 4 questions to level up!
Residual plotsGet 3 of 4 questions to level up!

## Topic D: Lesson 19: Interpreting correlation

#### Quiz 7

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

Level up on all the skills in this unit and collect up to 3800 Mastery points!