Question

In: Statistics and Probability

The following research studies are either single sample, independent sample or dependent sample. Choose only one...

  1. The following research studies are either single sample, independent sample or dependent sample. Choose only one for each question: with a short explanation why.
    1. Two groups were exposed to different levels of treatments of ankle sprains. Which treatment was most effective?
    1. A researcher in nursing wanted to know if the recovery of patients was quicker when some received additional in-home care whereas others received the standard amount.
    1. A group of adolescent boys was offered interpersonal skills counseling and then tested in September and May to see if there was any impact of family harmony?
    1. A group of adult men was given different instructions than last year in reducing their high blood pressure. The amount the blood pressure was reduced last year by 50. Are this year’s methods better or worse than last year’s at reducing blood pressure?
    1. One group of men was provided access to an exercise program and tested two times over a 6-month period or heart health.

Solutions

Expert Solution

(a)

Correct option:

Independent Samples

EXPLANATION: Here the two groups are treated with different levels of ankle sprains. The two samples are independent.

(b)

Correct option:

Independent Samples

EXPLANATION: Here the two groups are: Group 1: Additional home car. Group 2: Standard amount. The two samples are independent.

(c)

Correct option:

Dependent Samples

EXPLANATION: Here the same group is measured twice: September and May: The two samples are not independent because they are same set of .adolescent boys and thus the samples are dependent pairs.

(d)

Correct option:

Dependent Samples

EXPLANATION: Here the same group is measured twice: last year and this year: The two samples are not independent because they are same set of .adult men and thus the samples are dependent pairs.

(e)

Correct option:

Dependent Samples

EXPLANATION: Here the same group is measured two times over a 6 - month period. The two samples are not independent because they are same set of .men and thus the samples are dependent pairs.

orchestra answered 2 years ago
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