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Math 130- Project 1 1. Below is the stem plot for the ages of students in a certain class, Using your Ti calculator, find the mean and the standard deviation 2 5 5 2 1 1 0 2 1 4 82 1 o 0 71 1 1 0 3 1 8 8 99 9 8 7 9 999 8 8799 8 2. The following are the scores of Exam 1: 83, 92, 65, 73, 67, 88, 52, 77, 67.79, 77, 85, 100, 79, 85, 45, 100, 53,40, 88, 94, 63, 57, 60, 83, 65, 38, 94, 92, 94, 83, 33, 92, 100. 1). Find: a). Mean b). S.D c). Minimum d). First Quartile e). Median f). Third Quartile g). Maximum ili). Draw the Box plot using the five point summary

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Answer #1

1)

mean = sum of all terms /number of terms

= 22.0526

sd = 6.4471

Σ(n x)2 1537.8947 Σ(--X) / 1537.8947 38-1 6.4471 n-1

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