STA200 Homework 3 Based on Chapter 3. For this homework using MS Excel is optional. In the following ...
STA200 Homework 3 Based on Chapter 3. For this homework using MS Excel is optional. In the following exercises, we are going to calculate some statistics: the mean or average, the median, the mode, the variance and the standard deviation. 1) These are the scores from last week's geometry test: 90, 94, 53, 68, 79, 84, 87, 72, 70, 69, 65, 89, 85, 83, 72 Find the mean, variance, and the standard deviation. You earned a score of 72. How you did on the test compared to the rest of the class. 2) Find the median of the following data: 7, 9, 3, 4, 11, 1, 8, 6, 1, 4 3) Find the mode of the following data: 76, 81, 79, 80, 78, 83, 77, 79, 82, 75 4) You begin to observe to the color of clothing your employee’s wear. Your goal is to find out what color is worn most frequently so that you can offer company shirts to your employees. Monday: Red, Blue, Black, Pink, Green, and Blue Tuesday: Green, Blue, Pink, White, Blue, and Blue Wednesday: Orange, White, White, Blue, Blue, and Red Thursday: Brown, Black, Brown, Blue, White, and Blue Friday: Blue, Black, Blue, Red, Red, and Pink What is the mode of the colors above? 5) Mark operates Technology Titans, a Web site service that employs 8 people. Find the mean, variance, and the standard deviation of the age of his workers, if the ages of the employees are as follows: 55, 63, 34, 59, 29, 46, 51, 41
