Mean is the "meanest" because it requires the most work. Add up the values in your data set and divide by the number of terms in the data.
Let x represent attendees at Harry's Hoedown, then
Mean = [tex] \frac{Martha's (M) + Shirly's (S) + Harry's (x) }{3} [/tex]
41 = [tex] \frac{48 + 33 + x}{3} [/tex]
123 = 48 + 33 + x
123 = 81 + x
42 = x
Answer: 42
