Question

An experiment produces the following 11 results.

18.7 21.4 20.7 21.8 19.3 22.4 20.2 23.7 19.4 20.5 22.0

a) constuct a dotplot for this data

b) what is the median of the sample

c) write an expression for the sample mean(do not evaluate)

d) write an expression for the sample standard deviation (do not evaluate)

Answer 1

Ans. We make dotplot using MINITAB:-

Steps in MINITAB to draw dotplot:-

1. Enter data in Worksheeet.

2. Go to Graph -> Dotplot

3. Select Simple

4. Click OK.

5. Select Data sheet in Graph Variable.

6. Click OK.