6. 0.4 0.25 0.05 P(X) 0.3 Traffic Accidents The county highway department recorded the following probabilities for the number of accidents per day on a certain freeway for one month. The number of accidents per day and their correspond- ing probabilities are shown. Find the mean, variance, and standard deviation. Number of accidents X 1 2. 3 4 Probability P(X) 0.4 0.2 0.2 0.1 0.1 Fitness Machine A fitness center bought a new ex- ercise ma hev
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.
please find the mean, variance and standard deviation
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