true or false 10. The t - distribution is asymmetric about the mean. ---------------------------------------------------------------------------- 11. If two coins are tossed, which is NOT a possible value of the random variable for the number of tails? A. 1, B. 2, C. 3, D. 4 12. If P(X) = x/9, what are the possible values of X for it to be a probability distribution? A. 1,1,2 B. 2,3,4 C. 1,2,3 D. 0,2,3
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.
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