10.6 : Representing Variation Graphically Flashcards Preview

Biology Module 4 > 10.6 : Representing Variation Graphically > Flashcards

Flashcards in 10.6 : Representing Variation Graphically Deck (10):
1

Define discontinuous variation

A characteristic that can only result in certain values - no in between values

2

Is variation determined by genetic factors continuous or discontinuous ?

Discontinuous

3

What can you use to represent discontinuous variation?

Bar chart
Pie chart

4

Define continuous variation

A characteristic that can take any value within a range

5

What influences / causes continuous variation?

Not a single gene, but a number of genes ( poly genes )
Environmental factors

6

What can be used to represent continuous data?

Collected in frequency table
Potted on histogram

7

List the characteristics of a normal distribution curve

Mean, mode and median are the same

Bell shape, symmetrical around the mean

Most values lie close to mean value, number at extremes is low

50% of values less than mean,50% greater than mean

8

What is standard deviation?

A measure of how spread out the data is

9

What statistical tests can be performed to determine the significance of data collected?

T test - compares means of two populations

Spearman' rank correlation coefficient - considers relationship between two sets of data

10

Do worked examples of statistical tests ok?

Ok