Cost (in pesos) Frequency 50-65 19
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.
|
Cost (in pesos) |
Frequency |
|
50-65 |
19 |
|
66-81 |
13 |
|
82-97 |
38 |
|
98-113 |
24 |
|
114-129 |
10 |
|
130-145 |
36 |
|
146-161 |
18 |
|
162-177 |
2 |
- Cost of printing spent by 160 students per day
- Find its mean and median.
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