Lessons for S.ID.A.4
Normal calculations: areas and percentilesTurning a range of values into z-scores and reading off the share of the distribution that falls there.Lesson
Checking whether data look normalComparing the data against what a normal model would give, by graph rather than by assumption.Lesson
Density curves: area, mean and medianA smooth curve standing in for a histogram, with total area one under it.Lesson
The normal distributionThe bell curve: symmetric, described by mean and standard deviation.Lesson
The standard normal distributionThe normal curve with mean zero and standard deviation one, which every normal curve becomes after standardizing.Lesson
Standardizing a data setSubtracting the mean and dividing by the standard deviation to get a set with mean zero and spread one.Lesson
z-scores and the empirical ruleHow many standard deviations from the mean.Lesson
Printable Worksheets
Normal calculations: areas and percentiles worksheet (PDF)Printable worksheet with answer keyPreview
Checking whether data look normal worksheet (PDF)Printable worksheet with answer keyPreview
Density curves: area, mean and median worksheet (PDF)Printable worksheet with answer keyPreview
The normal distribution worksheet (PDF)Printable worksheet with answer keyPreview
The standard normal distribution worksheet (PDF)Printable worksheet with answer keyPreview
Standardizing a data set worksheet (PDF)Printable worksheet with answer keyPreview
z-scores and the empirical rule worksheet (PDF)Printable worksheet with answer keyPreview