STATISTICAL ANALYSIS with SOFTWARE APPLICATION MEASURES OF CENTRAL TENDENCY AND VARIABILITY. 1. Suppose two classes achieved the following grades on a math test, Class 1: 64, 70, 73, 77, 85, 90, 94 Class 2: 74, 75, 75, 76, 79, 80, 94 In each class, find the mean, median, mode, range, interquartile range, Variance, Standard Deviation, coefficient of variance Which class is better? 2. The table shows the daily sales in peso of two sari-sari stores near a school. In each store find the range, interquartile range, Variance, Standard Deviation, coefficient of variance Which store sales better? Store A Store B 300 300 310 120 290 500 301 100 299 490 295 110 305 300 300 480 Note: (You can use software application such as spss or spreadsheet) Copy the table then paste it into word then convert them into pdf. Take a screenshot on the software you use. Proving that you are the one solving. If you have no software, you can solve it manually! Take a picture of your answer convert them into pdf. NORMAL DISTRIBUTION. 1. The mean weight of adult American men is 180 pounds with standard deviation of 25 pounds. The weights are approximately normally distributed. a. What percent of all adult American men have a weight less than 130 pounds? b. What percent of all adult American men have a weight between 130 and 205 pounds? c. What percent of all adult American men have a weight less than 230 pounds? d. What percent of all adult American men have a weight less than 105 pounds? 2. Use Standard Normal Distribution to find the proportion of observations that satisfies each of the following statements. In each case, shade the area under the curve that is the answer to the question. z is less than -1.83 z is greater than 2. 18 z is between -2 and 1.53 z is between 1.42 and 2.68