10.6 Representing Variation Graphically

Question 1

Discontinuous variation

Answer 1

A characteristic that can only result in a certain number of outcomes eg an animal’s sex

Question 2

Continuous variation

Answer 2

Characteristic that can take any value within a range eg. Height of a plant

Question 3

Normal distribution curve

Answer 3

When continuous variation data is plotted onto a graph it usually produces a bell shaped curve called a normal distribution curve.

Question 4

Standard deviation

Answer 4

Measure of how spread out data is on a graph. The larger the standard deviation the larger the spread.

Question 5

Student’s T test

Answer 5

Used to compare means of data values of two populations. Shows a significant difference or not

Question 6

Spearman’s rank correlation coefficient

Answer 6

Shows the relation/correlation of two data sets. Either: no correlation, positive correlation or negative correlation