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) 401 56.11 306 54.66 688 88.68 751 103.61 667 83.37 396 55.56 359 53.49 692 81.12 935 109.85 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 899. 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) |
|---|---|
| 401 | 56.11 |
| 306 | 54.66 |
| 688 | 88.68 |
| 751 | 103.61 |
| 667 | 83.37 |
| 396 | 55.56 |
| 359 | 53.49 |
| 692 | 81.12 |
| 935 | 109.85 |
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 899.
Cost = $ (Please show your answer to 2 decimal places.)
A good regression calculator can be found at Regression Calculator
Step by step
Solved in 2 steps with 2 images
