Evaluate the mean of each data set mentally: 27, 30, 33

61, 71, 81, 91, 101

0, 100, 100, 100, 100

0, 5, 6, 7, 12

Mean of 27 30 and 33 is 30

Mean of 61 71 81 91 and 101 is 81

Mean of 0 100 100 100 and 100 is 80

Mean of 0 5 6 7 and 12 is 6

Mean is all the number added up then divided by the number of numbers there are

so for example the mean 0 1 2 3 and 4 would be is because

0 + 1 + 2 + 3 + 4 is 10

then 10/5 is 2

32

Step-by-step explanation:

Given: In a bowl of fruit, there are green grapes and black grapes in the ratio of in there are green grapes.

To Find: how many black grapes are there.

Solution:

The ratio of green grapes and black grapes is

Let the number of green grapes in bowl be

Therefore

Number of black grapes are

now,

Number of green grapes are

Number of black grapes are

                                               

                                               

hence the total number of black grapes in bowl of fruit is .