Module 2 - Statistics

Question 1

Advantages of box plots

Answer 1

• Highlights outliers

- Easy to compare two data sets

Question 2

Disadvantages of box plots

Answer 2

-Once drawn, detailed analysis of the four categories is not possible

Question 3

Advantages of histograms

Answer 3

-clearly shows the shape of the distribution of the data

Question 4

Disadvantages of histograms

Answer 4

• Outliers aren’t always highlighted

- Q1, Q2 and Q3 are harder to find/calculate

Question 5

Advantages of cumulative frequency curves

Answer 5

Easy to find the five-number summary

Question 6

Disadvantages of cumulative frequency curves

Answer 6

Outliers aren’t always highlighted

Question 7

How is no data skew shown?

Answer 7

Q2 - Q1 = Q3 - Q2

Mean median Mode

Question 8

How is a positive skew shown?

Answer 8

Q2 -Q1 < Q3 - Q2

Mean > Median > Mode

Question 9

How is a negative data skew shown?

Answer 9

Q2 - Q1 > Q3 - Q2

Mean < Median < Mode