The following data were obtained from an independent-measures research study comparing three treatment conditions. I II III 2 5 7 5 2 3 0 1 6 1 2 4 2 2 T =12 T =10 T =20 G = 42 SS =14 SS =9 SS =10 ΣX2= 182 Use an ANOVA with α = .05 to determine whether there are any significant mean differences among the treatments. a. The F-statistic is: b. Your decision is c. η2 is
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
The following data were obtained from an independent-measures research study comparing three treatment conditions.
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I |
II |
III |
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2 |
5 |
7 |
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5 |
2 |
3 |
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0 |
1 |
6 |
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1 |
2 |
4 |
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2 |
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2 |
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T =12 |
T =10 |
T =20 |
G = 42 |
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SS =14 |
SS =9 |
SS =10 |
ΣX2= 182 |
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Use an ANOVA with α = .05 to determine whether there are any significant mean differences among the treatments.
a. The F-statistic is:
b. Your decision is
c. η2 is
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