WESCAM RECOM Question 2 Not yet answered Marked out of 1.00 P Flag question Approximately what percentage of normally distributed data values will fall within 3 standard deviation above or below the mean? a. 99.7% O b. None of these. OC. 95% d. 68% e. varies. Marked out of 1.00 P Flag question Question 3 Answer saved or each statement, decide whether descriptive statistics is used. D a. The total amount of estimated losses from hurricane Hugo was $4.2 billion. Source: Insurance Service In 2013 the number of high school graduates will be 3.2 million students. Source: National Center for Co: Institute of Medicine.
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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