What chart to use?

Question 1

How would you show the frequency of categorical data?

- Sketch what you have chosen

Answer 1

Bar graph

Question 2

How would you show the frequency of numerical data?

- Sketch what you have chosen

Answer 2

Histogram

Question 3

How would you show the associations between 2 numerical variables?
-Sketch each of them out

Answer 3

Scatter plot
Line plot (space or time)
Map (space)

Question 4

How would you show the associations between 2 categorical variables?
-Sketch each of them out

Answer 4

Grouped Bar Graph

Mosaic plot

Question 5

How would you show the associations between one numerical variable and one categorical variable?
-Sketch each of them out

Answer 5

Strip chart
Box plot
Multiple histograms
Cumulative frequency distributions

Question 6

How wold one increase power?

Answer 6

Increase sample size
Increase difference from the null hypothesis
Have low variability in population