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2 years ago

13

Lisa's test grades are 79, 89 and 90

2 answers:

eimsori [14]2 years ago

7 0

Mean=Sum of data/No of data

So

Let that be n

n+79+89+90/4=88
n+258/4=88
n+258=352
n=94

Vaselesa [24]2 years ago

6 0

Answer:

<u>94</u>

Step-by-step explanation:

Equating the mean to the scores :

88 = 79 + 89 + 90 + x / 4
352 = 258 + x
x = <u>94</u>

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