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9 July, 08:26

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?

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  1. 9 July, 08:36
    0
    If the amount spent on snacks per month by all his classmates is leveled, that amount would be $38.

    Explanation:

    Mean is a measure of central tendency, that is it is used to measure how a range of values are centrally related.

    The mean is calculated by taking the average of a range of values. The mean expresses a characteristic that is shared by a particular population.

    Mean is represented mathematically as

    Mean = Sum of items : number of items

    So the mean amount spent on snacks is a levelled value of what Luke's classmates spend.
  2. 9 July, 08:51
    0
    Answer: The options are given below:

    A. Half of his classmates spend exactly $38 per month buying snacks.

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

    C. The majority of his classmates spend $38 per month buying snacks.

    D. Half of his classmates spend more than $38 per month buying snacks

    The correct option is B.

    Explanation: Mean can be defined as the sum of all the observations in a sample, divided by the total number of observations. Mathematically, it is expressed as:

    Mean = sum of observations / total number of observations

    From the question above, we have:

    Amount of money everyone spends buying snacks each month is equal to a mean of $38.

    What this means is that the average amount of money spent by everyone is equal to $38.

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

    So, we can conclude by saying, if one classmate paid above $38, and another paid below $38, it will be nullified by leveling the amount paid by all the classmates while calculating the mean.
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