The following are the cystatin C levels (mg/L) for the patients described in Exercise 15 (A-17). Cystatin C is a cationic basic protein that was investigated for its relationship to GFR levels. In...

The following are the cystatin C levels (mg/L) for the patients described in Exercise 15 (A-17).
Cystatin C is a cationic basic protein that was investigated for its relationship to GFR levels. In addition, creatinine levels are also given. (Note: Some subjects were measured more than
once.)

Cystatin C (mg/L) Creatinine (mmol/L)

2.34
Source: D. M. Z. Krieser, M.D. Used with permission.
(a) For each variable, compute the mean, median, variance, standard deviation, and coefficient of
variation.
(b) For each variable, construct a stem-and-leaf display and a box-and-whisker plot.
(c) Which set of measurements is more variable, cystatin C or creatinine? On what do you base
your answer?

that question from this book BIOSTATISTICS
A Foundation for Analysis
in the Health Sciences

chapter 2 question 16