Presentation Of Quantitavive Data

Question 1

Summary table

Answer 1

Always includes a summary paragraph-draws conclusions.

Question 2

Bar charts

Answer 2

Difference in mean values can be seen easily-used when data is divided into categories.

Question 3

Histograms

Answer 3

Used when data is continuous instead of discrete.

Question 4

Scattergrams

Answer 4

Do not depict differences but correlations between co-variables

Question 5

Skewed distribution

Answer 5

Distributions that appear to lean to one side or the other.

Positive skew is when most of the distribution is concentrated towards the left of the graph-mode at highest-medium then mean.

Negative skew-opposite.

Normal skew-symmetrical- mean, median and mode all at top.