Question

Listed below are mean MCAT scores listed in order by year, starting with the year 2002.

            27.0, 26.8, 27.1, 27.3, 27.4, 27.7, 28.1, 27.9, 28.3, 28.2, 28.3, 28.4

What important feature of the data is not revealed by any of the measures of center? Choose all that are appropriate.

Group of answer choices

Skewness to one side

Multimodal feature in the data

Possible outliers

Depth of dispersion

All of the above.

None of the above.

Answer 1

Solution

Observation:	XX	X^2X2
1	27.0	729
2	26.8	718.24
3	27.1	734.41
4	27.3	745.29
5	27.4	750.76
6	27.7	767.29
7	28.1	789.61
8	27.9	778.41
9	28.3	800.89
10	28.2	795.24
11	28.3	800.89
12	28.4	806.56
Sum =	332.5	9216.59

Standard Deviation : Square root of 0.3245 = 0.5696

min=26.8, max=28.4, which means that the range is

Range=max−min=28.4−26.8=1.6