The test scores for a math class are shown below.

Question

81,84,82,93,81,85,95,89,86,94
what are the mean, median, and mode of the data set

Answer 1

Mean: To find the mean, add up all the scores and divide by the total number of scores.
81 + 84 + 82 + 93 + 81 + 85 + 95 + 89 + 86 + 94 = 870
870 ÷ 10 = 87
Therefore, the mean is 87.

Median: To find the median, put the scores in order from smallest to largest and find the middle score. If there are an even number of scores, find the average of the two middle scores.
81, 81, 82, 84, 85, 86, 89, 93, 94, 95
The middle two scores are 85 and 86, so the median is (85 + 86) ÷ 2 = 85.5
Therefore, the median is 85.5.

Mode: The mode is the score that appears most frequently in the data set.
In this case, there is no score that appears more than once, so there is no mode.
Therefore, the mode is N/A.

Answer 2

are you sure

Answer 3

Yes, I am sure. The mean of the data set is 87, the median is 85.5, and there is no mode since no score appears more than once.

Answer 4

81 appears twice

Answer 5

I apologize for the mistake in my previous response. You are correct, 81 appears twice in the data set, so it is the mode. Therefore, the mean is 87, the median is 85.5, and the mode is 81.