1. The maximum number of sit-ups completed by the participants in an exercise class after 1 month of the program is given below. Construct a two-stem stem and leaf plot. 24 31 54 62 36 28 55 18 27 80 37 58 32 37 41 55 39 56 42 29 35 35
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.
1. The maximum number of sit-ups completed by the participants in an exercise class after 1 month of the program is given below. Construct a two-stem stem and leaf plot.
|
24 |
31 |
54 |
62 |
36 |
28 |
55 |
18 |
27 |
80 |
37 |
|
58 |
32 |
37 |
41 |
55 |
39 |
56 |
42 |
29 |
35 |
35 |
2. Find the mean, median, 20% trimmed mean, first
3. A statistics class has 20 female students and 10 male students. Average exams score for the females is 78.5 and the average exam score for the males is 72.1. What is the average exam score of the entire class?
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