Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
What is the term for variation between different species?
interspecific variation
intraspecific variation
normal variation
random variation
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What is the term for variation between individuals within a species?
normal variation
random variation
interspecific variation
intraspecific variation
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What is the purpose of random sampling?
to introduce sampling bias
to reduce the sample size
to increase the effects of chance
to ensure the samples are representative of the whole area
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What does random sampling involve?
(Select all that apply)
randomly generating coordinates across an area
repeating the sampling process once
repeating the sampling process several times
collecting samples from random coordinates
selecting specific organisms to sample
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What is the benefit of a large sample size in random sampling?
it reduces the representativeness of the sample
it introduces sampling bias
it minimises the effects of chance
it maximises the effects of chance
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What shape is a normal distribution curve?
S-shaped and symmetrical around a central mean value
bell-shaped and asymmetrical around a central mean value
bell-shaped and symmetrical around a central mean value
S-shaped and asymmetrical around a central mean value
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What does a small standard deviation indicate about the spread of values in a sample?
the values are clustered around the mean
the values are widely spread around the mean
the values are evenly distributed across the range
the values are skewed towards one end of the range
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What does a large standard deviation indicate about the spread of values in a sample?
the values are skewed towards one end of the range
the values are widely spread around the mean
the values are clustered around the mean
the values are evenly distributed across the range
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What do error bars display visually?
the mean value
the mode value
the median value
the standard deviation
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What does the length of error bars indicate about the degree of value spread in a sample?
longer error bars indicate less variation around the mean
longer error bars indicate a higher mean value
the length of error bars is not related to the degree of value spread
longer error bars indicate more variation around the mean
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