he heights and numbers of stories of nine notable buildings in Atlanta yielded the following information: Height (ft) # of stories mean = 684.2 mean = 45.0 SD = 131.1 SD = 9.8 r = 0.872 a. Find the regression line for predicting height from the number of stories the building has. b. If a building has 42 stories, what do you predict its height to be? c. What is the mean height of all buildings that have 50 stories?
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.
The heights and numbers of stories of nine notable buildings in Atlanta yielded the following information:
Height (ft) # of stories
mean = 684.2 mean = 45.0
SD = 131.1 SD = 9.8
r = 0.872
a. Find the regression line for predicting height from the number of stories the building has.
b. If a building has 42 stories, what do you predict its height to be?
c. What is the mean height of all buildings that have 50 stories?
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