The box-and-whisker plots show the number of phones sold per day during the first 10 days of a sale at different stores. Match the conclusion with the correct box-and-whisker plot. Cell Phones The company sold between 16 and 21 of their phones for the 1. upper 25% of sales. 5 6789 1011 12 13 14 15 16 17 18 19 20 21 22 23 Number of Phones Sold Daily at Store B Cell Phones The interquartile range is the largest for this group of cell 2. phones. ++++ 5 6789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Number of Phones Sold Daily at Store D Cell Phones The company sold between 7 and 9 phones on 25% of the 3. days. 5 67 89 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Number of Phones Sold Daily at Store A Cell Phones For half of the days, there were between 12 and 17 phones 4. sold. ++. 5 6789 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Number of Phones Sold Daily at Store C

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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.