Question

Provided below is the number of days that it took twenty letters to arrive in Cutback, Montana from New York, NY.

1, 5, 3, 4, 3, 2, 6, 1, 3, 3, 4, 3, 8, 3, 5, 2, 3, 4, 4, 3

a) Calculate all the measures of central tendency of the above numbers.

b) Which one would be the most appropriate measure of central tendency?

c) Calculate standard deviation and skew for the numbers.

Answer 1

a)

Tere are 3 measures of central tendency: mean, median, mode

b)

The median is preferred when your data set is skewed.

Here median will be appropriate.

c) Standard deviation is 1.57

Skewness is 1.170