Question

Please Help

Sharon tracks the number of cupcakes she sells each day for a week. The numbers of cupcakes she sold are 23, 25, 32, 35, 36, 25, and 27.
The mean of her sales over the week is _____
, and the median is _____

Answer 1

Mean: 29

23 + 25 + 25 + 27 + 32 + 35 + 36 = 203

203 / 7 = 29

Median: 27

23, 25, 25, 27, 32, 35, 36

Answer 2

The mean of her sales over the week is 29 and the median is 27

Explanation:

To find the mean you need to sum all daily sales and then divided by the number of days. If we called daily sales as xi and the number of days evaluated as N, we have that the mean can be expressed as

mean = (∑xi)/N ⇒ media = (23 + 25 + 32 + 35 + 36 + 25 + 27 )/7

⇒mean = 29.

To find the mediana you have to put the number of sales in increasing orden and then look which is the number in the middle of the serie. So

23 - 25 - 25 - 27 - 32 - 35 - 36

⇒median = 27.

Summarizing, the mean of the sales is 29 and the median 27.