Annual high temperatures in a certain location have been tracked for several years. Let X epresent the year and Y he high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between X nd Y. Use your calculator! x 4 5 6 7 8 9 10 11 12 13 14 15 y 9.75 7 7.65 10.2 7.35 9.4 7.45 7.4 8.05 9.1 6.45 9.4 r=
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.
Annual high temperatures in a certain location have been tracked for several years. Let X epresent the year and Y he high temperature. Based on the data shown below, calculate the
x
4
5
6
7
8
9
10
11
12
13
14
15
y
9.75
7
7.65
10.2
7.35
9.4
7.45
7.4
8.05
9.1
6.45
9.4
r=
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