Evidence-based Informed Health Practice 5

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The sample standard deviation is a measure of spread around the sample median.

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In Cluster sampling the whole population is divided into clusters that are then chosen randomly.

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A researcher studied the effects of noise on use of pain medication among patients in a noisy, inner city emergency ward. In this study the use of pain medication is an independent variable.

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Choose the correct statement;

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In a distribution with negative skew:

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In this particular study design two or more groups of people are selected on the basis of differences in their exposure to a particular agent e.g. a vaccine or a toxin and then followed up to see how many in each group develop a particular outcome. This is called:

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When reporting a relationship between an independent and a dependant variable the strength, direction and significance is reported by:

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We commit Type 2 statistical error when we report false-‐ negative results i.e. we may report there is no association when in reality there is one.

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A probability value (p value) of less than 0.05 is generally regarded as statistically significant.

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Evidence-based Informed Health Practice 5

Question 1 of 1

Time Left

The sample standard deviation is a measure of spread around the sample median.

Select the correct answer(s).

(0/0)

In Cluster sampling the whole population is divided into clusters that are then chosen randomly.

Select the correct answer(s).

(0/0)

A researcher studied the effects of noise on use of pain medication among patients in a noisy, inner city emergency ward. In this study the use of pain medication is an independent variable.

Select the correct answer(s).

(0/0)

Choose the correct statement;

Select the correct answer(s).

(0/0)

In a distribution with negative skew:

Select the correct answer(s).

(0/0)

In this particular study design two or more groups of people are selected on the basis of differences in their exposure to a particular agent e.g. a vaccine or a toxin and then followed up to see how many in each group develop a particular outcome. This is called:

Select the correct answer(s).

(0/0)

When reporting a relationship between an independent and a dependant variable the strength, direction and significance is reported by:

Select the correct answer(s).

(0/0)

We commit Type 2 statistical error when we report false-‐ negative results i.e. we may report there is no association when in reality there is one.

Select the correct answer(s).

(0/0)

A probability value (p value) of less than 0.05 is generally regarded as statistically significant.

Select the correct answer(s).

(0/0)

Which of the following descriptive statistics is more resistant to ‘outliers’?

Select the correct answer(s).

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