Tables, Charts and Graphs

Question 1

What are Tables?

Answer 1

• present data clearly, to show patterns in scores
• can be used to show raw data; or
• descriptive statistics eg. the mean, range etc

Question 2

What are Histograms?

Answer 2

• present continuous data, which is measured on a continuous scale along the x axis
• the frequency of an event is plotted on the y axis
• columns touch each other
• all intervals are shown

Question 3

What are Frequency Polygons?

Answer 3

• present continuous data, which is measured on a continuous scale along the a axis
• the frequency of the event is plotted on the y axis
• used to show a test of difference when more than one set of data needs to be presented

Question 4

What are Scatter grams?

Answer 4

• used to show a test of correlation
• data points are not connected
• the trend in data is shown by a line of best fit

Question 5

What are Bar Charts?

Answer 5

• present non continuous data, which falls into categories along the x axis
• the frequency is plotted on the y axis
• columns do not touch each other