Calculate the mean and standard deviation from the following data

Time (Minutes) to complete an exam: 40, 38, 67, 84, 92, 43, 58, 57, 48, 50, 50, 74, 86Mean: (add up the scores = 787; then divide by the number of participants = 13) 60.54 (to 2 decimal places)Standard deviation (assuming the total population is used): 17.64(take the mean (60.54) away from each score in the results, then square every answer and add them together (4047.21), before dividing by 13 (N) - the total number of participants. This is the variance (311.32). Now square root the answer for standard deviation)