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IA1 revision marine

Total questions: 10

Worksheet time: 7mins

Name
Class
Date
1.

Estimate the correlation coefficient for this scatterplot.

a)

r = 0.56

b)

r = -0.56

c)

r = 0.92

d)

r = -0.92

2.

R2 of 0.8 is considered

a)

strong correlation

b)

good correlation

c)

poor correlation

d)

no correlation

3.

Identify means to

a)

show the trends

b)

Establish or indicate something

c)

key characteristics

d)

how and why

4.

Describe the correlation in the graph shown.

a)

Strong Negative Linear

b)

Strong Positive Linear

c)

Weak Negative Linear

d)

Weak Positive Linear

5.

When p <0.05 then

a)

there is no significant difference

b)

there is a significant difference

6.

n is the number of a ........

a)

species at site

b)

total of all species at site

c)

n(n-1)

d)

no significant difference.

7.

N is the number of

a)

N(N-1)

b)

number of each species

c)

individuals at all sites

d)

a description of all the characteristics

8.

Contrast is to.....

a)

showing the trends

b)

listing similarities and differences

c)

identifying characteristics

d)

how and why

9.

COTS are

a)

commercial off the shelf

b)

crown of thorns star fish

c)

coloured outlier tanks

10.

Aragonite is a

a)

calcium based mineral

b)

aluminium based mineral