One sample has a mean of M = 10 and a second sample has a mean of M = 20. The two samples are combined into a single set of scores. What is the mean for the combined set of both of the original samples have n = 10 What is the mean for the combined set if the first sample has n = 8 scores and the second sample has n = 12? What is the mean for the combined set if the first sample has n = 12 scores and the second sample has n = 8?
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.
One sample has a mean of M = 10 and a second sample has a mean of M = 20. The two samples are combined into a single set of scores.
- What is the mean for the combined set of both of the original samples have n = 10
- What is the mean for the combined set if the first sample has n = 8 scores and the second sample has n = 12?
- What is the mean for the combined set if the first sample has n = 12 scores and the second sample has n = 8?
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