The data lists the scores on a 50-point test 90 subjects took the test. The scores ranged from 12 to 50. 49 13 41 15 33 22 50 33 31 42 29 19 13 27 32 32 44 30 30 44 45 21 18 31 31 17 45 34 19 23 49 41 21 27 34 22 44 33 39 26 39 23 23 32 36 26 34 12 41 25 40 26 45 22 42 40 35 18 50 27 33 18 45 14 30 30 26 18 16 23 32 19 33 26 21 24 17 32 38 17 19 33 26 27 44 41 26 41 39 49 What does "n" represent and what is its Value? would n be 90? Create a Simple Frequency Table for the test scores. Do NOT use intervals. Clearly label the "x" and "f" columns, and indicate "n" in the bottom of the table. Create a Grouped Frequency Distribution of the test scores, with the first class being 11-20. Clearly label and "x" and "f" columns, and show "n" at the bottom of your table.
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.
The data lists the scores on a 50-point test 90 subjects took the test. The scores
49 13 41 15 33 22 50 33 31 42
29 19 13 27 32 32 44 30 30 44
45 21 18 31 31 17 45 34 19 23
49 41 21 27 34 22 44 33 39 26
39 23 23 32 36 26 34 12 41 25
40 26 45 22 42 40 35 18 50 27
33 18 45 14 30 30 26 18 16 23
32 19 33 26 21 24 17 32 38 17
19 33 26 27 44 41 26 41 39 49
What does "n" represent and what is its Value? would n be 90?
Create a Simple Frequency Table for the test scores. Do NOT use intervals. Clearly label the "x" and "f" columns, and indicate "n" in the bottom of the table.
Create a Grouped Frequency Distribution of the test scores, with the first class being 11-20. Clearly label and "x" and "f" columns, and show "n" at the bottom of your table.
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