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Home Q & A Board Science-Related Homework Help Mathematics
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Fiolet Fiolet
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11 years ago
The heights of 8 fourth graders are listed in inches: {50, 51, 55, 52, 59, 54, 54, 53}. Find the mean, median, mode, variance, and range. Also, do you think this sample might have come from a normal population? Why or why not?
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#1
11 years ago
mean is the average.
add all 8 together = 428
then divide by 8 = 53.5

median is the middle
write them in order and find the center one, in this case 2.
53 54
then find the average of the 2
53.5

mode is the number that appears the most
54

I'm not sure what the variance is

range is the biggest number minus the smallest number.
9

the second part is not normal, these kids are in fourth grade and between 4'2" and 4'11".
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