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Academic Wordskills - 34 STATISTICS

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Филипп Леонидович
Филипп Леонидович
Bielorrusia

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Statistics (gap fill)

Academic Wordskills - 34 STATISTICS

Филипп Леонидович
1

valid distribution probability value determine variable sample randomly random outcomes significant significant random

A researcher wants to study the effects of caffeine on productivity . To do this , they select 50 participants from a population of office workers . They divide the participants into two groups : one group receives a caffeine pill , while the other group receives a placebo pill . The participants then complete a productivity task .

The researcher measures the number of tasks completed by each participant and records the results . This is a variable , as the is determined by the random assignment of participants to either the caffeine or placebo group . The are the number of tasks completed by each participant .

After collecting the data , the researcher creates a of the number of tasks completed by each group . They use statistical tests to if there is a difference between the two groups . If the difference is significant , they can conclude that caffeine has an effect on productivity .

It's important for the researcher to ensure that their is representative of the population of office workers . They must select their participants at , rather than choosing them based on characteristics that might bias the results .

In this experiment , the variable of interest is the number of tasks completed , and the researcher wants to ensure that their results are reliable and . They can do this by conducting the experiment with a large enough sample size and by using statistical tests to check for differences between the two groups .

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