Student grades on a chemistry exam were: 77; 78; 74; 81; 88; 51; 79; 82; 84; 91 Select the stem-and-leaf plot of the data. (a) Stem Leaf 5 51 6 7 77 78 74 79 8 81 88 82 84 9 91 (b) Stem Leaf 50 51 60 70 74 77 78 79 80 81 82 84 88 90 91 (c) Stem Leaf 5 1 6 7 4 7 8 9 8 1 2 4 8 9 1 (d) Stem Leaf 5 1 6 7 7 8 4 9 8 1 8 2 4 9 1
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.
Student grades on a chemistry exam were:
77; 78; 74; 81; 88; 51; 79; 82; 84; 91
- Select the stem-and-leaf plot of the data.
(a) Stem Leaf 5 51 6 7 77 78 74 79 8 81 88 82 84 9 91 (b) Stem Leaf 50 51 60 70 74 77 78 79 80 81 82 84 88 90 91 (c) Stem Leaf 5 1 6 7 4 7 8 9 8 1 2 4 8 9 1 (d) Stem Leaf 5 1 6 7 7 8 4 9 8 1 8 2 4 9 1 - Are there any potential outliers? If so, which scores are they?
If there are no outliers, enter NA.
The field below accepts a list of numbers or formulas separated by semicolons (e.g. 2;4;6 or x+1;x−1). The order of the list does not matter.
The outlier(s) is/are __________.
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