Question 11 • Concepts in Probability and Statistics A
Sasha’s daily tips this work week were $43, $32, $65, $88, $50, and $72. Is Sasha correct in thinking that the mean accurately represents how much money she makes in daily tips?
Answer
A
Yes, Sasha is correct. The mean amount she makes is $58.33 in a day.
B
Yes, Sasha is correct. The mean amount she makes is $65.33 in a day.
C
No, Sasha is not correct. The median amount she makes is $53.00 in a day.
D
No, Sasha is not correct. The median amount she makes is $60.00 in a day.
Explanation
Add the six daily tip amounts: $43 + $32 + $65 + $88 + $50 + $72 = $350. Divide by 6 days to get a mean of about $58.33 per day. The amounts do not include an unusually extreme value that would make the mean misleading, so Sasha is correct that it represents her daily tips.
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