59,56,47,59,59,97,30,73

Question

By how much would the mean decrease if the number 33 were added to the set

Answer 1

To find the mean decrease, we first need to find the current mean of the given set of numbers:

Mean = (59 + 56 + 47 + 59 + 59 + 97 + 30 + 73) / 8
Mean = 480 / 8
Mean = 60

Now, if we add 33 to the set, the new sum of the numbers will be:

480 + 33 = 513

And the new number of elements will be 9.

So, the new mean will be:

Mean = 513 / 9
Mean = 57

The decrease in the mean can be calculated as:

Decrease = Current Mean - New Mean
Decrease = 60 - 57
Decrease = 3

Therefore, the mean would decrease by 3 if the number 33 were added to the set.