Question

Sara’s teacher gave her class 10 quizzes, each worth 30 marks. Sara’s marks on the test are given below.

16,15,18,16,17,4,18,19,18,15

Determine the mean, median and mode of her marks.

Answer 1

Sara's mean quiz score is 15.6, the median is 16.5, and the mode is 18.

Step-by-step explanation:

To calculate the mean, we add all the scores together and divide by the number of quizzes. The sum of Sara's scores is 156, and there are 10 quizzes, so the mean score is 156/10 = 15.6.

To find the median, we first arrange the scores in ascending order: 4, 15, 15, 16, 16, 17, 18, 18, 18, 19. Since there is an even number of scores, the median is the average of the two middle scores: (16 + 17)/2 = 16.5.

The mode is the number that occurs most frequently. Sara's scores 18 occurred three times, which is more than any other score, so the mode is 18.

Answer 2

The mean is 6.6

The median is 16

mode is 18

Step-by-step explanation:

I'm not sure if this is tight but yeah:)