Consider the following pairs of measurements. 5 3 - 2 7 4 y 4 1 7 4 3 a. Construct a scatterplot of these data. Choose the correct graph below. O A. В. С. D. Q 10- 10- 10- 10- 5- -4 10 -4 10 -4 5 10 -4 10 b. What does the scatterplot suggest about the relationship between x and y? A. As x increases, y tends to decrease. Thus, there appears to be a positive, linear relationship between x and y. B. As x increases, y tends to increase. Thus, there appears to be a negative, linear relationship between x and y. O C. As x increases, y tends to increase. Thus, there appears to be a positive, linear relationship between x and y. D. As x increases, y tends to decrease. Thus, there appears to be a negative, linear relationship between x and y. M 5
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.
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