4. The mean of seven scores is 21. Find the sum of the scores.
A. 3
B. 7
C. 28 D. 147
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4. The mean of seven scores is 21. Find the sum of the scores.
A. 3
B. 7
C. 28 D. 147
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Answer:
d
Step-by-step explanation:
mean = 21
number of score added =7
mean is the same as average : mean is equal to sum of all scores over the number of scores
mean= ( sum of all scores)÷ ( number of scores added )
sum of all scores= ( mean) × ( number of scores added )
sum of all score =(21)×(7)
sume of all scores = 147
sana makatulong