The following data show the method of payment by 16 customers in a supermarket checkout line. Here, C refers to cash, C⁢K to check, C⁢C to credit card, and D to debit card, and O stands for other. C O C⁢K D CC D D C⁢K C⁢C C⁢C D C⁢C C⁢C O O O   New attempt is in progress. Some of the new entries may impact the last attempt grading.Your answer is partially correct. a. Prepare a frequency distribution table. Category Frequency C Enter you answer; C C⁢K Enter you answer; CK C⁢C Enter you answer; CC D Enter you answer; D O Enter you answer; O                               New attempt is in progress. Some of the new entries may impact the last attempt grading.Incorrect. b. Calculate the relative frequencies and percentages for all categories. Round your answers for relative frequencies to three decimal places and your answers for percentages to one decimal place. Category Relative Frequency Percentage C Enter your answer; value for row C and column Relative Frequency Enter your answer; value for row C and column Percentage C⁢K Enter your answer; value for row CK and column Relative Frequency Enter your answer; value for row CK and column Percentage C⁢C Enter your answer; value for row CC and column Relative Frequency Enter your answer; value for row CC and column Percentage D Enter your answer; value for row D and column Relative Frequency Enter your answer; value for row D and column Percentage O Enter your answer; value for row O and column Relative Frequency Enter your answer; value for row O and column Percentage

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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.