Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Number of Pages (x) 251 621 529 582 722 764 268 691 436Cost(y) 251 35.63 88.73 83.77 82.66 99.86 110.32 53.84 97.83 74.68 a. A student calculates a linear model y= x+ . (Please show your answers to two decimal places) b.Use the model to estimate the cost when number of pages is 207. Cost = $ (Please show your answer to 2 decimal places.)
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.
Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below:
Number of Pages (x)
251
621
529
582
722
764
268
691
436Cost(y)
251
35.63
88.73
83.77
82.66
99.86
110.32
53.84
97.83
74.68
a. A student calculates a linear model y= x+ . (Please show your answers to two decimal places)
b.Use the model to estimate the cost when number of pages is 207.
Cost = $ (Please show your answer to 2 decimal places.)
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