Measures of Central Tendency

Measures of Central Tendency-a value that represents the centre of a data set.
(it can be the mean, median, or mode)

Data set- is a group of numbers that you must arrange in order from least to greatest.
example: data set: 2, 36, 8, 4, 7, 9, 5 = 2, 4, 5, 7, 8, 9, 36.

Median- is the middle number in a set of data after the data have been arranged in order.
example:









Mode- the most frequently occurring number in a set of data
(mode and 'most' both have 4 letters)
examples: 1) 2, 3, 4, 4, 4, 7, 7, 9. The mode is: 4
2) 1, 3, 6, 9, 10. The mode is: NO MODE.

Mean- a measure of central tendency the sum of a set of values divided by the number of values in a set.
example: 3, 4, 6, 8, 9
3+4+6+8+9=30
30 divided by 5=6
1) arrange the numbers in order.
2) find the sum of the data set.
3) divide it by how much numbers there are in that data set.
Range- the positive difference between the largest and smallest values in a data set.
example:






Outlier- a value that is much larger or smaller, than the other data value.
(the data set may have 1 or more outlier or zero outliers).
example: 1, 4, 6, 7, 8, 9, 34 = outlier: 34

Heres a question for you to try!
18, 19, 79, 17, 20, 19, 12, 19.
find the mean, median, range, and outliers.





Here's a video that you guys would enjoy:

p.s: try to memorize it for the test :P

Here's also a very fun game you can play! Have fun :)!


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Due Monday, June 11.

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Measure of central tendency

VALUE- A value that represents the center of a data can be the mean, median or mode.

Data st is a group of numbers that must arrange in order from least to greatest.

example-

MEDIAN- The middle number in the set of data after the data have been arrange in the order.

example-

MODE- The most frequently occurring number in a set of data.

Mode and most have 4 letters and the letter M and O in the beginning

example-

-

MEAN- A measure of central tendency the sum of a set of values divide by the number of values in the set , add up the number and divide that by how many numbers there are.

example-

4,6,8; 4+6+8+=18; 18/3=6

RANGE- The positive difference between the largest and the smallest values in a data set.

example-

9, 8, 8, 6, 6, 5, 5, 4, 3, 1; 9-1=8 biggest take away littlest

OUTLIER- A value that is much larger or smaller then the other data value, the data set may have more then 1 outlier for the following.

example-

outlier for 1,67,68,67,64,65,100 are 1 and 100.

Here is a video for you guys (:

Here a game you guys could play. Good-luck on the game ! (:

http://www.quia.com/rr/51667.html

DON'T FORGET HOMEWORK BOOKLET DUE THIS MONDAY !

GOOD-LUCK ON THE TEST !

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kbyee (: