1. What correlation exist when high values in one variable correspond to low values in the other variable? A. Positive B. Negative C. Perfect D. None 2. The coefficient of correlation r between two bivariate data is -0.80, which best describes the correlation? A. There is no correlation because the computed r is negative. B. The correlation is very high but negative. C. The correlation is very low but negative. D. The strength of correlation is negligible.
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.
1. What
the other variable?
A. Positive B. Negative C. Perfect D. None
2. The coefficient of correlation r between two bivariate data is -0.80, which best
describes the correlation?
A. There is no correlation because the computed r is negative.
B. The correlation is very high but negative.
C. The correlation is very low but negative.
D. The strength of correlation is negligible.
3. Which bivariate data are most likely positively associated?
I. The monthly income and size of the house of a family
II. The number of absences and grade of a student
A. I only B. II only C. both D. neither
4. Which of these mostly likely describes the correlation between grades in math and
physics?
A. strong, positive B. strong, negative
C. weak, positive D. weak, negative
5. What value is needed to interpret results in Pearson Product-Moment Correlation?
B. value B. r value C. t value D. z value
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