presentation of quantitative data

Question 1

scattergram

Answer 1

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

Question 2

bar chart

Answer 2

a type of graph in which the frequency of each variable is represented by the height of the bars

Question 3

histograms

Answer 3

a type of graph which shows frequency, but unlike a bar chart, the area of the bars represents frequency

the x-axis must start as a true zero and the scale is continuous

Question 4

skewed distribution

Answer 4

a spread of frequency data that is not symmetrical, where the data clusters to one end

mode at top
median
mean

Question 5

normal distribution

Answer 5

a symmetrical spread of frequency data that forms a bell-shaped pattern

the mean, media and mode all located at the highest peak

Question 6

positive skew

Answer 6

a type of frequency 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 7

negative skew

Answer 7

a type of frequency 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