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)

Annabelle K. avatar
Answered by Annabelle K. Psychology tutor

1842 Views

See similar Psychology A Level tutors
Cookie Preferences