Distributions 781 The blood lead concentrations, in micrograms per deciliter (µg/dL), of 20 children from two different neighborhoods were measured. The results are recorded in the table. 3.97 3.91 3.98 3.70 4.13 3.97 4.01 3.88 4.11 3.70 ighborhood 1 3.96 3.77 4.30 4.08 4.12 4.93 3.93 3.94 3.85 3.83
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.
![Distributions
781
The blood lead concentrations, in micrograms per deciliter (µg/dL), of 20 children
from two different neighborhoods were measured. The results are recorded in the
table.
3.97
3.91
3.98
3.70
4.13
3.97 4.01
3.88
4.11
3.70
ighborhood 1
3.96
3.77
4.30
4.08
4.12
4.93
3.93
3.94
3.85
3.83](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc5a5c1bf-0e90-47b1-a583-7ef6ab9cbc19%2F7469cad9-6777-40a4-9a4c-12e4c44aef57%2Fnvsx40e.jpeg&w=3840&q=75)
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