The data below describe the fat content, in grams per serving, for a sample of 20 chicken sandwiches from fast-food chains. 16 21 20 31 24 17 25 28 27 27 41 56 9 6 3 9 18 20 18 30 D (a) Compute the first quartile (Q,) the third quartile (Qa) and the interquartile range. b) List the five-number summary. (c) Construct a boxplot and describe the shape. (c) Which of the following is the correct boxplot? OA. OB. OC. 15 30 45 60 Fat (grams per serving) 6 15 30 45 Fat (grams per serving) 15 3045 60 C 60 Fat (grams per serving) Based on the boxplot, what shape does the data appear to have? O Right-skewed O Symmetric O Left-skewed Click to select your answer(s).
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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