Julieta is using the dot plots to compare two sets of data. both plots use the same number line. what is the difference between the mean of each data set?

The answer is C, 9.

Step-by-step explanation:

The dot plot is giving the numbers 2, 3, 5, 5, 5, 9, 11, 14,15,21

and the second gives 7, 12, 16,16,18,20,20,25,28.

To find the mean, you add all of the numbers together and divide by the number of numbers there are, so if you had 1, 2, and 3, you would do 1 + 2 + 3 divided by 3, which is 2.

2, 3, 5, 5, 5, 9, 11, 14,15,21 all added together is 162, and 7, 12, 16,16,18,20,20,25,28 is equal to 90. 162 divided by 9 (since there are nine numbers) is 18, and 90 divided by 10 is 9.

18 - 9 is 9.

Hence the answer of 9.

Hope this helps!

I know for a fact this is from a "source."

*wink* :< )

i do not know the answer i am sorry

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13