Graphs

Question 1

What are the 5 main ways of displaying quantitative data?

Answer 1

1. Tables
2. Bar chart
3. Histogram
4. Line graph
5. Scattergram

Question 2

What is a bar chart?

Answer 2

A type of graph in which the frequency of each variable is represented by the height of the bars- used for discrete data (categorical or nominal)

Question 3

What is a histogram?

Answer 3

A type of graph in which continuous data is represented. Similar to bar chart, except the bars touch each other.

Question 4

What is a line graph?

Answer 4

A type of graph which represents continuous data and use points connected by lines to show how something changes in value.

Question 5

What is a scattergram?

Answer 5

A type of graph that represents the strength and direction of a relationship between co-variables in a correlational analysis

Question 6

What is a normal distribution?

Answer 6

A symmetrical spread of frequency data that forms a bell-shaped pattern. Mean, median and mode are all located at the highest peak.

Question 7

What is a positive skew?

Answer 7

A type of distribution in which the long tail is on the positive (right) side of the peak and most of the distribution is concentrated on the left

Question 8

What is a negative skew?

Answer 8

A type of distribution in which the long tail is on the negative (left) side of the peak and most of the distribution is concentrated on the right