Display of quantitative data and data distributions

Question 1

What data is a bar chart most suitable for?

Answer 1

Nominal data (categories)

Question 2

What must the data on a line graph or histogram’s x-axis be?

Answer 2

Continuous (not nominal)

Question 3

When are scattergrams used?

Answer 3

When doing a correlational analysis.

Question 4

What is another name for a normal distribution curve?

Answer 4

Bell-curve shape.

Question 5

Where are the mean, mode and median on a normal distribution graph?

Answer 5

All in the exact mid-point.

Question 6

In skewed distribution, if the right side of the graph is taller then the left side, what is the name of the skew?

Answer 6

Negative skew (left skewed)

Question 7

In skewed distribution, if the left side of the graph is taller than the right side, what is the name of the skew?

Answer 7

Positive skew (right skewed)

Question 8

Where do the mean, median and mode lie on a negatively skewed graph?

Answer 8

Mean < median < mode

Question 9

Where do the mean, median and mode lie on a positively skewed graph?

Answer 9

Mode > median > mean