Forty students have completed a math test. The mean score was 60 and a mean absolute deviation was 12. The teacher has decided to adjust the scores by adding 5 points to each test score. Calculate the new mean and mean absolute deviation.

The new mean would be 65, the deviation becomes 7

Step-by-step explanation:

We can show a mock exam result below with prior mean of 60

Showing 12 students instead of 40 as the same rate would change if 40 students totaled 60 mean than those with same mean as 12 students.

42 45 49 51 55 56 63 64 68 72 73 86

mean total =724/ 12 = 60.33

We add 5 to each test score

47 50 54 56 60 61 68 69 73 77 78 91  

mean total = 784 /12 =65.33

The mean just increases at same rate.

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.

765238725478629038640962136509762139056074

step-by-step explanation:

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