GI: Investigating Variation Flashcards Preview

AS/A-Level Biology > GI: Investigating Variation > Flashcards

Flashcards in GI: Investigating Variation Deck (7)
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1
Q

Why should your sample be random?

A

to avoid bias

2
Q

Why should results be analysed statistically?

A

To ensure variation observed isn’t just down to chance

3
Q

Standard deviation

A

Measures the spread of values about the mean

4
Q

Large standard deviation =

A

Varied sample

5
Q

How can standard deviations be plotted?

A

Using error bars

6
Q

What do error bars extend?

A

One standard deviation above and one standard deviation below the mean

7
Q

Longer error bar = ?

A

Larger standard deviation = more spread out the sample data is from the mean

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