The airborne speeds in miles per hour of 21 planes are shown. Class Frequency 366 - 386 3 387 - 407 2 408 - 428 2 429 - 449 2 450 - 470 1 471 - 491 2 492 - 512 3 513 - 533 6 21 Draw the percentile graph using class boundaries for the x-axis and the percentages for the y-axis. Round the answer to nearest percent.
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 airborne speeds in miles per hour of
planes are shown.
| Class | Frequency |
|---|---|
|
366
386
|
3
|
|
387
407
|
2
|
|
408
428
|
2
|
|
429
449
|
2
|
|
450
470
|
1
|
|
471
491
|
2
|
|
492
512
|
3
|
|
513
533
|
6
|
|
21
|
Draw the percentile graph using class boundaries for the x-axis and the percentages for the y-axis. Round the answer to nearest percent.
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