Two samples each have n = 4 scores. The first sample has a variance of s2 = 10 and the second sample has a variance of s2 = 6. What is the estimated standard error for the sample mean difference? A. standard error = 1 B. standard error = 2 C. standard error = 4 D. standard error = 8 E. cannot be determined from the information given
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.
Two samples each have n = 4 scores. The first sample has a variance of s2 = 10 and the second sample has a variance of s2 = 6. What is the estimated standard error for the sample mean difference?
A. standard error = 1 B. standard error = 2 C. standard error = 4 D. standard error = 8 E. cannot be determined from the information given
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