Question

The table shows data from a survey about the number of times families eat at restaurants during a week. The families are either from Rome, Italy or New York, New York.

Maximum Minimum Q1 Q3 IQR Median Mean σ
Rome 16 0 3 13 10 8.5 8 5.4
New York 20 1 4.5 6 1.5 5.5 7.25 6.1

Which of the choices below best describes how to measure the center of this data?

Answer 1

Both centers are best described with the median.

The Rome data center is best described by the mean. The New York data center is best described by the median.

The Rome data center is best described by the median. The New York data center is best described by the mean.

Answer 2

I think this is C...

Answer 3

@dumbcow @robtobey @whpalmer4 @e.mccormick please help.

Answer 4

no other way around, the new york data has outliers which skew the mean so the median best represents the center of the data

the Rome data is more evenly distributed, notice the mean and median are pretty much the same

Answer 5

So A?

Answer 6

most of the time, you use the mean

however, if you have outliers (notice the max on NY is 20, far from the average)
you might want to use the median

Answer 7

so A?

Answer 8

No use mean unless there are outliers then use median
which choice demonstrates this?

Answer 9

Oh ok so B?

Answer 10

@dumcow is correct. The answer is B.) The Rome data center is best described by the mean. The New York data center is best described by the median.

Answer 11

A or B Tariq? I'm stumped >-<