Given the following class intervals, compute for the following. Class Intervals frequency (f) 30 – 35 14 36 -41 19 42 – 47 27 48 – 53 30 54 – 59 24 60 – 65 13 66 – 71 7 Required: a. Coefficient of kurtosis b. Mean c. Standard deviation
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.
6. Given the following class intervals, compute for the following.
|
Class Intervals |
frequency (f) |
|
30 – 35 |
14 |
|
36 -41 |
19 |
|
42 – 47 |
27 |
|
48 – 53 |
30 |
|
54 – 59 |
24 |
|
60 – 65 |
13 |
|
66 – 71 |
7 |
Required:
a. Coefficient of kurtosis
b. Mean
c. Standard deviation
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