AnswersAP Biology - SC5182 ASkills Lesson: Statistical Analysis of Data

Skills Lesson: Statistical Analysis of Data Answers

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Leigh investigates the color of shells deposited on a beach as she walks along the coastline. She wants to know whether this variation in color is due to chance or if it is significant. Data was collected over a minimum 20 cm long region at four sites along the beach coast. Shells were categorized into four different shades, 1 being the lightest and 4 being the darkest. Complete the following sentences. This data is because it includes data that are . A will be used to evaluate the statistical significance of any findings.

Answers:
Selection 1:quantitative
Selection 2:numbers
Selection 3:chi-square
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Which null hypothesis did Leigh write down in her science journal?

A
Regardless of location, shells will always have different shades of color.
B
The direction of ocean wave activity influences shell color.
C
Shell color randomly appears in four different shades.
D
Shell color is generally likely to be darker.
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166296

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Do the data support or refute the null hypothesis?

A
5.31 < 7.82, so the null hypothesis is supported.
B
5.31 < 7.82, so the null hypothesis is refuted.
C
With 5% certainty, the null hypothesis is supported.
D
With 7% certainty, the null hypothesis is supported.

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Skills Lesson: Statistical Analysis of Data…