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satela [25.4K]
3 years ago
12

What happens to the mean of the data set {2, 4, 5, 6, 8, 2, 5, 6} if the number 7 is added to the data set?

Mathematics
1 answer:
konstantin123 [22]3 years ago
7 0

Answer:

It increases

Step-by-step explanation:

The mean of the given data set of 8 values is 4.75 (\frac{2+4+5+6+8+2+5+6}{8})

Adding 7 into the data set also increase the number of data points to 9, so the mean becomes:\frac{2+4+5+6+8+2+5+6+7}{9}, which is equal to 5

Hope this helps

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Answer:

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Step-by-step explanation:

1. Make it so 1/4 is an eighth so you can subtract it from 5/8.

1/4 x 2 = 2/8

2. Subtract 2/8 from 5/8.

5/8 - 2/8 = 3/8

Daniel ate 2/8s of the left over pie, and there is 3/8s remaining.

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6 0
3 years ago
Kendra reads in Modern Dog Magazine that the average age of dogs currently alive is 4.8 years. To determine if this finding appl
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Answer:

The true statement about Kendra's sample is:

b) Kendra's samples are precise but not accurate.

Step-by-step explanation:

a) Data and Calculations:

Average age of dogs currently alive = 4.8 years

Average ages of dogs in Kendra's sample

Week   Average Age (in years)

1                    3.7

2                   3.8

3                   4.2

4                   4.1

5                  3.9

6                  3.9

7                  4.0

Total         27.6

Mean = 3.9 (27.6/7)

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5 0
3 years ago
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