SB3k: Variation Keywords Flashcards

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1
Q

Acquired characteristic

A

A characteristic that can change during life, due to a change in the environment.

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2
Q

Continuous variation

A

Continuous data can take any value between two limits. Examples include length, mass, time. Continuous variation is when differences in a characteristic are continuous.

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3
Q

Discontinuous variation

A

Data values that can only have one of a set number of options are discontinuous. Examples include shoe sizes and blood groups. Discontinuous variation is when differences in a characteristic are discontinuous.

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4
Q

Environmental variation

A

Differences between organisms caused by environmental factors, such as amount of heat, light, damage. These differences are called acquired characteristics.

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5
Q

Genetic variation

A

Differences between organisms caused by differences in the alleles they inherit from their parents, or differences in genes caused by mutation.

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6
Q

Mean

A

An average calculated by adding up the values of a set of measurements and dividing by the number of measurements in the set.

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7
Q

Median

A

The middle value in a data set.

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8
Q

Mode

A

The most common value in a data set.

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9
Q

Normal distribution

A

When many individuals have a middle value for a feature, with fewer individuals having greater or lesser values. This sort of data forms a bell shape on charts and graphs.

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10
Q

Range

A

The difference between the highest and lowest values in a set of data (usually ignoring any outliers or anomalous results).

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