The accompanying observations are precipitation values during March over a 30-year period in Minneapolis-St. Paul.

a. Construct and interpret a normal probability plot for this data set.
b. Calculate the square root of each value and then construct a normal probability plot based on this transformed data. Does it seem plausible that the square root of precipitation is normally distributed?
c. Repeat part (b) after transforming by cube roots.

Transcribed Image Text:

77 1.20 3.00 1.62 2. 2.48 1.74 47 3.09 1.31 87 .96 81 1.43 1.51 .32 1.18 1.89 1.20 3.37 2.10 .59 1.35 .90 1.95 2.20 .52 .81 4.75 2.05