MATH 302 EXAM QUESTIONS AND ANSWERS

MATH 302 EXAM QUESTIONS AND ANSWERS Question 1 of 20 1.0/ 1.0 Points A sample of 20 observations has a standard deviation of 4. The sum of the squared deviations from the sample mean is: A. 28 8 B. 30 4 C. 32 0 D. 40 0 Answer Key: B Question 2 of 20 1.0/ 1.0 Points Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately what percent of the observations are within two standard deviations of the mean? A. 95 % B. 68 % C. 50 % D...

MATH 302 EXAM QUESTIONS AND ANSWERS Question 1 of 20 1.0/ 1.0 Points A sample of 20 observations has a standard deviation of 4. The sum of the squared deviations from the sample mean is: A. 28 8 B. 30 4 C. 32 0 D. 40 0 Answer Key: B Question 2 of 20 1.0/ 1.0 Points Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately what percent of the observations are within two standard deviations of the mean? A. 95 % B. 68 % C. 50 % D...