Astore manager is looking at past jewelry sales to determine what sizes of rings to keep in stock. the list shows the ring sizes purchased by the last ten jewelry customers. 9, 7, 6.5, 7.5, 7, 8, 5, 6, 7.5, 8 what is the variance of the data set? round to the nearest hundredths. 0.40 0.72 1.15 2.14

(C)1.15

Step-by-step explanation:

The given data set is:

9, 7, 6.5, 7.5, 7, 8, 5, 6, 7.5, 8

In order to find the variance of the given data set, firstly find the mean of the data set.

Thus,

Now, Data set                                  

9                                                                          3.422

7                                                                          0.022

6.5                                                                       0.422

7.5                                                                       0.122

7                                                                          0.022

8                                                                          0.722

5                                                                          4.622

6                                                                          1.322

7.5                                                                       0.122

8                                                                          0.722

Now,

Thus, the variance of the given data set is 1.15.

6^2 or 36

step-by-step explanation:

6000n

6×1000n

6×10^3 n

so we need 6n need to be a perfect cube

so n has to be 6^2 so that 6n is 6^3

what i'm saying is if you let n be 6^2 you have 6^3×10^3 or 60^3 which is a perfect cube