A researcher explores whether there’s any association between grades and the amount of time students spend on social media. He collects a large sample of university students, and each student indicates how many hours they spend on social media per week, and also what their current GPA is. A. Single-sample z-test B. Single-sample t-test C. Independent samples t-test D. Related samples t-test (repeated measures or matched samples) E. Correlation
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.
A researcher explores whether there’s any association between grades and the amount of time
students spend on social media. He collects a large sample of university students, and each student
indicates how many hours they spend on social media per week, and also what their current GPA is.
A. Single-sample z-test
B. Single-sample t-test
C. Independent samples t-test
D. Related samples t-test (repeated measures or matched samples)
E.
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