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) 671 82.1 893 93.3 267 49.7 819 88.9 424 53.4 429 62.9 530 71 882 106.2 452 68.2 A student calculates a linear model yy = xx + . (Please show your answers to at least 4 decimal places) Use the model to estimate the cost when number of pages is 606. Cost = $ (Please show your answer to 2 decimal places.) A good regression calculator can be found at Regression Calculator
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) |
|---|---|
| 671 | 82.1 |
| 893 | 93.3 |
| 267 | 49.7 |
| 819 | 88.9 |
| 424 | 53.4 |
| 429 | 62.9 |
| 530 | 71 |
| 882 | 106.2 |
| 452 | 68.2 |
A student calculates a linear model
yy = xx + . (Please show your answers to at least 4 decimal places)
Use the model to estimate the cost when number of pages is 606.
Cost = $ (Please show your answer to 2 decimal places.)
A good regression calculator can be found at Regression Calculator
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