Question

the mean of 10 items was 50. the value of largest item was 65. it was later found that it is actually 60. therefore the correct mean is?​

Answer 1

Answer:

which class are you

Answer 2

Given,

Mean of 10 items is 50.

Largest item is 65

Actual largest item is 60

To find,

The correct mean of the 10 items.

Solution,

The mean of some items can be expressed by the following way,

Mean = Sum of the items/Number of items

Or, Sum of the items = Mean × Number of items

Sum of the items = 50 × 10 = 500

Now, the actual largest item is 5 greater than the mistakenly included largest item. So, the actual sum of the items will be 5 less than the previous sum.

Actual sum of the items = 500-5 = 495

Actual mean of the items = 495/10 = 49.5

Hence, the correct mean of the items is 49.5