f 90-99 3 80-89 1 70-79 2 60-69 3 50-59 4 a. X = 90 b. X = 70 c. X = 74 d. Cannot be determined
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.
X f
90-99 3
80-89 1
70-79 2
60-69 3
50-59 4
| a. |
X = 90
|
|
| b. |
X = 70
|
|
| c. |
X = 74
|
|
| d. |
Cannot be determined
|
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
