Age of Students Who Own iPads Number of Students 14 20 15 78 16 105 17 264 18 347 a. Create a histogram that represents the data. b. List three facts you can gather from looking at the data and histogram.
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 data is given as,
| Age of students who own iPads | Number of Students |
| 14 | 20 |
| 15 | 78 |
| 16 | 105 |
| 17 | 264 |
| 18 | 347 |
Now the histogram is drawn using EXCEL as follows:
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