One of the lines in the following scatter plot is the regression line fitted to the data. Which of the statements are correct? a) The red and green line have the right direction, and, hence, one of them could be the regression line. b) The blue line seems to represent the mean value of the data with respect to y and thus could be the regression line. c) The point in the top right corner has a strong influence on the regression line. d) Leaving aside the point in the corner, the red line seems to fit better to the rest of the data.
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.
One of the lines in the following scatter plot is the regression line fitted to the data. Which of the
statements are correct?
a) The red and green line have the right direction, and, hence, one of them could be the regression line.
b) The blue line seems to represent the mean value of the data with respect to y and thus could be the regression
line.
c) The point in the top right corner has a strong influence on the regression line.
d) Leaving aside the point in the corner, the red line seems to fit better to the rest of the data.
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