Notes for June 06, 2011

Measure of Central Tendency- a value that represents the centre of a data set.

- can be the mean, medi

an and mode.

Data set- is a group of numbers that you mus

t arrange in order from least to greatest.

e.i 2,4,3,5,3,4,5,5,6,4,5,3,7,34,5,6

arrange from least to greatest: 2,3,3,3,4,4,4,5,5,5,5,5,6,6,7,34

Note: Before you find the Median, Me

an or Mode be sure that you arranged it from least to greatest.

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

If you left with two numbers you need to add them and divide them to get the median.

e.i

Mode- the most frequently occurring number in a set of data.

- mode and most have both 4 letters.

e.i

mode of 3,5,7,7,9 is 7 because 7 appeare

d the most.

mode of 1,1,1,2,2,2,3,3,3,4 is 1,2 and 3 because they appeared the most.

mode of 1,1,1,2,2,2,3,3,3 is no mode b

ecause they`re all last or second place.

Mean- a measure of central tendency.

- the sum of a set of values divided by the number of values in a set.

Range- the positive differences between the largest and smallest values in a data set.

Outlier- a value that is much larger or smaller than the other data value.

- the data set may have more than 1 outlier or zero outlier.

e.i

1,67,68,64,65,100 are 1 and 100 because the rest of them starts with 6 except for 1 and 100.

Here`s our homework for those who did not write it.

Find mean, median, mode, range and outliers.

18,19,79,17,20,12

14,14,16,15,16

98,202,99,91,2,95,89,88,94

Here`s a link to help you practice for mean, median, mode, range and outliers.

I also found a video to help you understand all about our lesson.

I hope this little information help you! :D