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zalisa [80]
3 years ago
11

What happens to the mean of the data set {2, 4, 7, 6, 3, 6, 7} if the number 25 is added?

Mathematics
2 answers:
Margaret [11]3 years ago
8 0

Answer:

It goes up by 2.5

Step-by-step explanation:

Mean equation: (n₁ + n₂ + n₃ + ...)/n

Current mean: (2 + 4 + 7 + 6 + 3 + 6 + 7)/7 = 35/7 =<em> 5</em>

New mean: (2 + 4 + 7 + 6 + 3 + 6 + 7 + 25)/8 = 60/8 = <em>7.5</em>

Difference: 7.5 - 5 = 2.5

puteri [66]3 years ago
6 0

Answer:

the answer is 60

Step-by-step explanation:

2+4= 6

6+7= 13

13+6= 19

19+3=22

22+6= 28

28+7= 35

35+25= 60

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