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 (xx) Cost(yy) 641 80.51 534 55.74 814 92.54 981 119.91 965 116.15 929 102.19 395 42.45 222 26.42 992 118.12 A student calculates a linear model yy = + xx. (Please show your answers to 2 decimal places) Use the model to estimate the cost when number of pages is 324. 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 (xx) | Cost(yy) |
|---|---|
| 641 | 80.51 |
| 534 | 55.74 |
| 814 | 92.54 |
| 981 | 119.91 |
| 965 | 116.15 |
| 929 | 102.19 |
| 395 | 42.45 |
| 222 | 26.42 |
| 992 | 118.12 |
A student calculates a linear model
yy = + xx. (Please show your answers to 2 decimal places)
Use the model to estimate the cost when number of pages is 324.
Cost = $ (Please show your answer to 2 decimal places.)
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