Statistical Analyses Used. List the Statistical Procedures Essay

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statistical analyses used.

List the statistical procedures used to describe the sample.

Power analysis was used in order to discover power of effect. The power was set to 0.8 with a significant level of 0.05. Differences between the intervention and the control group were tested with Pearson's Chi. A t-test was used for the other perimeters. ANCOVA was used for testing changes between the two groups over time.

Was the level of significance or alpha identified? If so, indicate the level (.05, .01, or .001).

The level of significance was described. The power of the effect size was set to 0.8 with a significant level of 0.05. 0.05 was used throughout as perimeter of significance.

Complete the table below with the analysis techniques conducted in the study:

Identify the purpose (description, relationships, or differences) of each analysis technique.

Power analyses was used in order discover whether the test actually did discover a difference that did exist, in other words that the test avoided a Type II error and actually did record a statistical significance. For this reasons, one needs a significantly large enough population. 8 or greater is generally the power that is used, in other words that there is an 80% chance that one should find a statistically significant difference when there is one.

Pearson's Chi was used to test for distribution in sex, education (health care workers), current smoking status and musculoskeletal symptoms in neck, shoulders, upper- and lower back. It is used to test whether the observed frequency differs from the expected distribution.

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It also tests the independence, in other words in this case to test whether obesity of workers was connected with any of these factors or was independent of them.

A t-test was used for the other perimeters. A t-test is used to see whether difference exists between two groups. Here it was used to see whether difference existed between control and experiment group.

ANCOVA was used for testing changes between the two groups over time.

2) List the statistical procedures.

Power analysis was used in order to discover power of effect. The power was set to 0.8 with a significant level of 0.05. Differences between the intervention and the control group were tested with Pearson's Chi. A t-test was used for the other perimeters. ANCOVA was used for testing changes between the two groups over time. ANCOVA tests the variance in 2 or more groups taking into accounts possibility of variance of other factors.

3) List the statistics.

the intervention group significantly reduced body weight with 3.6 kg (p < 0.001), BMI from 30.5 to 29.2 (p < 0.001), body fat percentage from 40.9 to 39.3 (p < 0.001), waist circumference from 99.7 to 95.5 cm (p < 0.001) and blood pressure from….....

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