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To find out approximately how many hours its residents are spending playing cards at a senior retirement home, the recreation director conducts a random survey. The table below shows the number of hours per week these randomly selected seniors play cards.

    Hours Seniors Play Cards

Senior Citizen     Hours Played

     Joe                           4

    Mary                          3

    Bert                           5

   Frank                        12

  Elizabeth                   13

   Janet                        16

What is the estimated number of hours all seniors at this retirement home play cards, the population mean, based on the sample and rounded to the nearest whole hour?


A 7 hours

B 8 hours

C 9 hours

D 10 hours

 Apr 16, 2018

If you are trying to find the mean, or average, of the numbers, I can help you! 


To find the mean, you add up all the numbers in the list, and divide the total by how many numbers there are in the list. 


Adding the numbers in the list, we have:


4 + 3 + 5 + 12 + 13 +16 = 53


Then we divided 53 by the total numbers there are in the list, which is 6


53 / 6 is rounded up to 9.


The answer you are looking for is 9.

 Apr 16, 2018

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