Daily income (N$) [1– 500] [501 – 1000] | [1001 – 1500] Frequency 30 40 10 Total so
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 daily income for a sample of kapana vendors at a local open market is shown in the frequency distribution below:
What is the median for the daily income of kapana vendors?
![Daily income (NS)
Frequency
[1- 500]
30
[501 – 1000]
[1001 – 1500]
40
10
Total
80](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1b31b221-c0a1-45ad-9d92-7ef145e6acf9%2F6b8c39c4-25bf-42be-82c8-06241d7c5518%2Fxlu1nob_processed.png&w=3840&q=75)
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