Ashley Churchill
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Quiz on Statistics, created by Ashley Churchill on 20/01/2017.

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Ashley Churchill
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Statistics

Question 1 of 4

1

What are the characteristics of an observational study?

Select one or more of the following:

  • Investigators observe subjects

  • Investigators measure variables of interest

  • Investigators control variables of interest

Explanation

Question 2 of 4

1

Descriptive Statistics...

Select one or more of the following:

  • Consists of methods for organizing and summarizing information.

  • Consists of methods for drawing and measuring the reliability of conclusions about a population based on information obtained from a sample of a population.

  • Includes the calculation of various descriptive measures such as averages, measures of variation, and percentiles.

  • Appeared after Inferential Statistics, historically.

  • Is interrelated with Inferential Statistics

  • Appeared before Inferential Statistics, historically.

  • Includes the construction of graphs, charts

Explanation

Question 3 of 4

1

hello

Select one or more of the following:

  • l

  • l5

Explanation

Question 4 of 4

1

A confounding variable is related both to
group membership and to the outcome of
interest. Its presence makes it hard to
establish the outcome as being a direct
consequence of group membership.

Select one of the following:

  • True
  • False

Explanation

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