Team Home Runs National American League League 3 10 6 11 1 12 977 13 116 96 14 9 98 15 65 16 35 20 17 5 18 7 4 19 58 2 20 0 21 14 22 23 24 5 Key: 2 1 20 10 means 202 HR for a team in the NL and 200 for a team in the AL
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.
Home Runs 2012 Here is a “back-to-back” stemplot
that shows two data sets at once—one going to the
left, one to the right. The display compares the number
of home runs for Major League Baseball teams in the
National League and the American League during the
2012 season.a) Use the data in the stemplot to construct comparative
boxplots.
b) Write a few sentences comparing the distributions in
home runs for teams in the two leagues.
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