1. Medical statistics

Tests of significance, part 2

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  1. Medical statistics

Tests of significance, part 1

Tests of significance: Statistical significance means there is a good chance that a relationship exists between two variables. Null hypothesis: States that there is no relationship between any two variables, so statistical effort will be directed to prove that Null hypothesis is likely or not likely. Statistical significance means that null hypothesis is unlikely. Statistical […]
  1. Medical statistics

Tests of significance, part 2

The t-test is any statistical hypothesis test in which the test statistic follows a Student’s t-distribution under the null hypothesis. A t-test is the most commonly applied when the test statistic would follow a normal distribution if the value of a scaling term in the test statistic were known. When the scaling term is unknown and is replaced by an estimate based on the data, the test statistics (under certain conditions) […]
  1. Ergonomics

Ergonomics concept made easy

Manual Handling is handling loads using physical effort. It includes lifting, carrying, pushing, pulling, moving, etc.                                      Which activity is more serious: Lifting from the ground is more serious than lifting from a table, Lifting & Carrying are more serious than pushing or pulling, Pushing is more serious than pulling, Side pushing or pulling is more […]
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