A Brief Version: Elementary Statistics Ch 3
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| What are the four measures of central tendency? | show 🗑
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| Statistic | show 🗑
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| Parameter | show 🗑
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| show | Also known as the arithmetic average. Is found by adding the value of the data and dividing by the total number of values.
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| Median | show 🗑
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| show | The value that occurs most often in a data set.
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| Unimodal | show 🗑
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| Bimodal | show 🗑
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| Multimodal | show 🗑
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| No Mode | show 🗑
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| show | The sum of the lowest and the highest values in the data set and then divide by 2. The symbol MR is used.
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| Weighted Mean | show 🗑
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| show | The majority of the data values fall to the left of the mean and cluster at the lower end of the distribution; the "tail" is to the right.
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| Negatively Skewed or Left-Skewed | show 🗑
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| Symmetric Distribution | show 🗑
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| show | The highest value minus the lowest value. The symbol R is used.
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| Variance | show 🗑
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| show | The square root of the variance. The symbol is the Greek lowercase letter sigma for population and s for sample.
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| show | Population size.
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| n = | show 🗑
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| X = | show 🗑
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| Coefficient of Variation | show 🗑
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| show | A rough estimate of the standard deviation is s = range/4.
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| Chebyshev's Theorm | show 🗑
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| Empirical Rule | show 🗑
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| Percentiles | show 🗑
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| show | A value obtained by subtracting the mean from the value and dividing the results by the standard deviation. The symbol is z.
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| show | An extremely high or an extremely low data value when compared with the rest of the data values.
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| show | The difference between the first quartile and the third quartile.
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| show | Position in fourths that a data value holds in the distribution.
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| Decile | show 🗑
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| show | A graph drawing a horizontal line from the minimum data value to Q1 drawing a horizontal line from Q3 to the max data value, and drawing a box with vertical sides pass through Q1 and Q3 with a vertical line inside the box passing through the median or Q2.
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| Five-Number Summary | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
dengler
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