Ch. 5 The Normal Curve Comparing histograms to the normal curve Interpretation of SDs and areas

Standardized Units Converting to standardized units: 1.Find the deviation from the mean 2.Calculate the number of SDs the deviation is Example: The average age of the laid off salaried employees is 48.6 years and the standard deviation is 12.9 years. Convert 55 years to standard units.

Activity: Hand Span Get into groups of 5-6 people Each group should complete one handout and hand it in when finished

Area Under the Normal Curve Area between -1 & 1 Area between -2 & 2 Area between 0 & 1 Area between 0 & 2 Area between -2 & 0 Area between 1 & 2

Area between -1.5 & 1.5 Area between 0 & 1.5 Area between 1 & 1.5 Example Set B p. 84