Ie 526 test3 calculation questions

Test 3, Calculation Questions Q1 Find the mean, variance, and standard deviation of the following student scores. a. 50 20 30 50 80 b. 105 102 103 105 108 c. 34, 43, 81, 106, 106, 115 Q2. Find the range, variance, and standard deviation of the Following 6 observations 0.9 1.3 1.4 1.2 0.8 1.0. Q3. The test scores of 30 students are given as follows: 30, 27, 24, 21, 18, 15, 12, 09, 03, 30, 27, 24, 21, 18, 15, 12, 09, 27, 24, 21, 21, 21, 21, 18, 15, 12, 21, 18, 15, 21 a) Prepare the tally and frequency table b) Compute the mean or average score c) Find the median d) Find the mode Q4. Use the data and information provided in Question 3 to calculate the following: a) The variance b) The standard deviation Q5. The scores in Mrs. Leonards algebra class were 44, 50, 38, 100, 96, 42, 47, 50, 82 and 60. c) Calculate the mean d) Calculate the variance e) Calculate the standard deviation Q6. Find the mean, variance, and standard deviation for the following scores: 11, 16, 19, 20, 21, 22, 25, 26, 29, 33, 34, 38, 39, 46, 52, 55, and 58.