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What does it mean when a researcher sets an observed p value 0.05 Are all statistical difference between groups that reach the 0.05 level or 0.01 level meaningful?
Wiki User
∙ 10y ago
Yes, in fact any statistical having a probability of occurence under the null hypothesis less than 0.05 would be considered significant.
Wiki User
∙ 10y ago
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Why are researchers so careful about drawing conclusions regarding statistical significance?
They want to make sure an observed difference isn't due to chance
When a researcher cannot tell which variable might be causing an observed effect in an experiment the variables are?
confounded
What is The percent difference between an observed value and its actual value?
It is the observed error.
The difference between an observed or calculated value and a true value?
error
What is the difference between empirical and theoretical probability?
Empirical anything is what is observed. Theoretical is a calculation of what things ought to be.
Why are researchers so careful about drawing conclusions regarding statistical significance?
They want to make sure an observed difference isn't due to chance
When a researcher cannot tell which variable might be causing an observed effect in an experiment the variables are?
confounded
What does SS stand for in statistical t-tests?
It stands for sum of squares maybe? This is the sum of (observed value-mean value)^2 for all the observed values
To decide whether observed differences between samples reflect actual differences between?
statistical significance
What is The percent difference between an observed value and its actual value?
It is the observed error.
What is the name of Most beautiful city in the world?
From many researchers traveling around the world to answer this specific question, they have observed from surveys & technology sent from researcher to researcher that Paris is the most beautiful (but yet expensive) place in the world.
How is it possible for one group to score higher than the other group and yet we conclude there is no reliable difference between the groups?
Given any two groups there will usually be random variations in their scores. A proper statistical test is designed to assess whether the observed difference is likely to be a result of such random variation or if it due to a genuine - reliable - difference between the groups.
What has the author J R Wilson written?
J. R. Wilson has written: 'Some observed statistical properties of small scale turbulence' -- subject(s): Atmospheric turbulence, Boundary layer (Meteorology), Statistical methods
What is the chi square test used for?
The chi-squared test is used to compare the observed results with the expected results. If expected and observed values are equal then chi-squared will be equal to zero. If chi-squared is equal to zero or very small, then the expected and observed values are close. Calculating the chi-squared value allows one to determine if there is a statistical significance between the observed and expected values. The formula for chi-squared is: X^2 = sum((observed - expected)^2 / expected) Using the degrees of freedom, use a table to determine the critical value. If X^2 > critical value, then there is a statistically significant difference between the observed and expected values. If X^2 < critical value, there there is no statistically significant difference between the observed and expected values.
What is a organized meaningful data called?
Organized meaningful data is called information. Information that is useful to one person is not necessarily useful to another person.
What is the difference between sowing and planting?
The treatment effect is the difference between the observed outcome and the "normal" outcome
What the difference between a pie and tartlet?
The treatment effect is the difference between the observed outcome and the "normal" outcome
