Mean, Mode, Median
Mean, Mode, Median
Given the data set {13, 3, 10, 9, 7, 10, 12, 8, 6, 3, 9, 6, 11, 5, 9, 13, 8, 7, 7}
find the mean, median and mode.
|Enter the data into a list. |[pic] |
|(See Basic Commands for entering data.) | |
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|Find the Mean and Median: | |
|Method 1: |[pic] |
|Press 2nd MODE (QUIT) to return to the home screen. | |
| |[pic] |
|Press 2nd STAT (LIST). Arrow to the right to MATH. | |
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|Choose option #3: mean( if you want the mean. | |
|Choose option #4: median( if you want the median. | |
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|Your choice will appear on the home screen waiting for you to tell it which list to use.| |
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|Remember the List names appear on the face of the calculator above the number keys 1-6. | |
|Find the Mean and Median: |[pic] |
|Method 2: | |
|Press STAT. Arrow to the right to CALC. Now choose option #1: 1-Var Stats. | |
|When 1-Var Stats appears on the home screen, tell the calculator the name of the list | |
|you are using | |
| (such as: 1-Var Stats L1) | |
|Press ENTER. | |
|Arrow up and down the screen to see the statistical information about the data. | |
|Note: minX and maxX give statistical information needed | |
|to calculate the midrange. | |
|Find the Mode: (While there is no specific calculator function to find the mode, the |[pic] |
|calculator is helpful in ordering the data so that you can find the mode easily.) | |
| |[pic] |
|Sort the data into ascending or descending order to help find the mode. | |
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|STAT, #2 SortA(, and specify L1, or the list you are using. | |
|Look at the list (STAT, #1 EDIT). | |
|Examine the data to see which value(s) appear(s) most often. | |
|The mode for this data set is 7 and 9. Each of these values appears 3 times in the data| |
|set. | |
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|Copyright ©2000-2005 | |
|Find the Midrange: (While there is no specific calculator function to find the midrange,|[pic] |
|the calculator has function to find the minimum and maximum of a list) | |
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|Press 2nd MODE (QUIT) to return to the home screen. | |
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|Press 2nd STAT (LIST). Arrow to the right to MATH. | |
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|Choose option #1: min( for the minimum. | |
|Choose option #2: max( for the maximum. | |
Find the mean, median, mode and midrange for the following data sets.
Data Set 1:
8 |12 |15 |9 |6 |8 |10 |9 |8 |6 |7 |8 | |
Mean Median Mode Midrange
Data Set 2:
78 |62 |98 |90 |88 |73 |79 |86 |81 | |84 |93 |97 |63 |59 |78 |82 |87 |93 | |
Mean Median Mode Midrange
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