Mindy scored 28,64,0and 96.
a.Calculate her mean score.
b.After 5 tests her mean score was 55.What was her fifth score?
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Step-by-step explanation:
a. Mean = Sum of terms / Number of terms
= 28+64+0+96/4
=188/4 = 47
Her mean score is 47
b. Let the fifth score be x
So, according to the formula
Mean = 28+64+0+96+x/5
55 = 188 + x/ 5
275 = 188+x
x= 275-188
x = 87
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