Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and the recorded number of pages in each textbook and its cost. The data is shown below: Number of pages (x) Cost (y)
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 the recorded number of pages in each textbook and its cost.
The data is shown below:
Number of pages (x) Cost (y)
850 77.5
288 34.92
762 80.58
698 61.82
955 82.95
571 51.39
547 57.23
434 50.06
430 35.7
A student calculates a linear model using technology
y = ______ x + _______.
Answer to 2 decimals places.
Use the model to estimate the cost when number of pages is 526.
Cost = _______
Use the linear model with the rounded coefficients and then round the answer to 2 decimal places
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