type of correlation: a. Speed of a car and amount of speeding tickets b. Size of your shoe and size of dog c. Size of your shoe and your height d. Amount of points scored and your jersey number e. Paycheck size and water bill amount f. Number of calories eaten and the number of bags of Takis eaten g. The temperature outside and the amount of air conditioning used
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.
Correlation: Correlation is used to measures the association or linear relationship between two variables.Where one variable is dependent variable and another one is independent variable.
Correlation coefficient is denoted with r and it should lie within the range of -1 and +1
Positive correlation : As Increasing of one variable the other variable increases
Negative Correlation: As Increasing of one variable the other variable decreases
No correlation: By changing of one variable the other variable will remains same
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