Question

Determine which data set would have the largest mean.

2, 8, 12, 16

1, 9, 12, 18

1, 8, 12, 28

8, 9, 12, 28

Answer 1

The mean is the sum of all the values in the data set, divided by the number of values in the data set. So the mean of the first data set is:
\[\frac{2+8+12+16}{4}=\frac{38}{4}=9.5\]
There are four values in each data set, therefore the set with the largest sum of its values will have the largest mean.

Answer 2

do u know how to calculate the mean

Answer 3

no @kropot72 did not help me

Answer 4

first you add all the numbers. all the data. For example: 2,8,12,16. You add those numbers to get 38.

With me so far?

Answer 5

yup

Answer 6

Then you divide by the amount of the data. In this case you have 4 pieces of data since the're 4 numbers. So 38/4. That gives you 9.5. The mean of the first set of data is 9.5

Answer 7

any problems?

Answer 8

basically you add all the numbers and divide by the amount of numbers.

Answer 9

want another example?

Answer 10

hold on i have another question for u

Answer 11

I got a better example if you want

Answer 12

ok

Answer 13

do you get the problem though?

Answer 14

yeah i jus cant find the 3rd set`s mean

Answer 15

1+8+12+28=49

Answer 16

/4=?

Answer 17

there are 4 sets of data so u divide by 4

Answer 18

12.25?

Answer 19

49/4=12.25

Answer 20

yes

Answer 21

then the 4th 47/4=i do not know

Answer 22

that is 11.75

Answer 23

so it is the third

Answer 24

yes

Answer 25

all you gotta do is add the numbers. and them divide by the amount of numbers.

Answer 26

do you know how to do measures of central tendancy

Answer 27

well let me see the problems first

Answer 28

might or might not, Its been 3 years since 6th grade.

Answer 29

are u in 6th?

Answer 30

1.Which measure of central tendency best describes this data set?

52, 58, 53, 57, 91

Mean
Median
Mode
Range

2.The weight, in pounds, of 6 small dogs is: 16, 20, 17, 16, 17, 16. A somewhat overweight dog joins them. The new dog weighs 28 pounds. Which measure of central tendency is not affected by placing this new dog into the group?

Mean
Median
Mode
None of the above

3.The number of unpopped kernels in 7 bags of popcorn is: 13, 17, 8, 11, 10, 13, 15. If each value is doubled, what would happen to the mean amount of unpopped kernels for these 7 bags?

It would not change.
It would double.
It would increase by two.
It would be cut in half.

Answer 31

The last choice D would have the largest mean. Mean = Average.

Answer 32

yeah i for got the last one forgot to calculate that

Answer 33

Hint: Median = Middle. Set the ordered numbers from least to greatest and find out which one is in the middle:D

Answer 34

my mistake

Answer 35

mlg: you have to see if the median changes of you add those numbers.

Answer 36

u there?

Answer 37

yea

Answer 38

@landshark5 yeah my dog needed to get put in the bath sorry