presentation of quantitative data: tables and graphs

Question 1

what are the steps of drawing graph?

Answer 1

● choosing an appropriate graph

● labelling the axis

● drawing up an appropriate scale

● writing a title

Question 2

what are bar charts?

Answer 2

● used to show data that represent different categories / groups in research (discrete data)

● each category is displayed separate from other bars to represent its difference

● mean / frequency on y-axis

● category on x-axis

Question 3

what are histograms?

Answer 3

● used to display data that is continuous on both of the axis

● bars have no gaps between them

Question 4

what are scatter graphs?

Answer 4

● used to display correlational data

● line of best fit not necessary

● shows strength and direction of relationship between 2 variables

● both sets of data must be continuous