omplete the following problems (from your textbook) for Week 2: .10 he file Mobileloyalty contains spending on products ($) during a three-month period by a sample of 15 customers receiving incentives tH a mobile loyalty program. 46.10 57.45 108.25 50.75 35.20 55.35 22.90 67.50 50.65 63.00 59.70 41.55 56.65 52.60 78.30 a. Compute the mean and median. b. Compute the variance, standard deviation, range, and coefficient of variation. Are the data skewed? If so, how? d. Based on the results of (a) through (c), what conclusions can you reach concerning spending on products by customers receiving incentives through a mobile loyalty program? C.
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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