Question

After conducting a survey of all his classmates, Luke discovers that the amount of money everyone spends buying snacks each month has a mean of $38. What does the mean say about the amount his classmates spend on snacks?

A: The majority of his classmates spend $38 per month buying snacks.
B: Half of his classmates spend more than $38 per month buying snacks
C: Half of his classmates spend exactly $38 per month buying snacks.
D: If the amount spent on snacks per month by all his classmates is leveled, that amount would be $38.

Answer 1

It is D. D: If the amount spent on snacks per month by all his classmates is leveled, that amount would be $38.

Answer 2

Answer: Option 'D' is correct.

Explanation:

Since we have given that

The amount of money everyone spends buying snacks each month has a mean of $38.

`Mean=\frac{\text{Sum of observations }}{\text{Total number of observartions}}`

It means that average amount of money spend by everyone is $38.

If the amount spent on snacks per month by all his classmates is leveled, that amount would be $38.

So, if some one paid more amount than $38, whereas some one paid less amount than $38.

It will be nullify by leveling the amount by all his classmate while calculating the mean.

So, Option 'D' is correct.