Thread: statictics

A shoe salesman wants to see if his female customers have a preference in the color of shoe purchased. What is the test value for the following data
Black 48
Brown 32
Red 13
Navy 18
White 23

Answer:
a. 28.31
b. 16.77
c. 26.80
d. 21.50

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I am getting the answer (c) ->is that correct...
thankyou..

It looks like the average (arithmetic mean) to me.