#### Transcript of Statistics

Measure of Center

statistical question

- A question where there is more than one answer.

**by: Alexa Lower and Rachel White**

**Statistics**

Introduction to Statistics

Find out if this question is statistical

Common Mistakes:

Mean

Outlier-

A number in the set of data that is much greater or less than the other values. An outlier can affect the mean.

Common mistakes:

Forgetting to add in all numbers, Dividing by the wrong number, and make sure if 0 is included in the data set, add it in the number to be divided by.

Mean Absolute Deviation

Mean Absolute Deviation-

the average of how much data values differ the mean.

To find the M.A.D.-

find the M.A.D in this data set.

common mistakes-

Finding the wrong mean in the beginning can conclude in wrong answer, finding the wrong sum of the distances or the wrong distance.

How many pets do you have?- good

When was the civil war?- bad

measure of center-

A measure that describes the typical value of a data set. This includes median, mean, and mode.

common mistakes and tips:

Use mode when there is a data set with no numbers.

Use mean when there are outliers in the data set.

Use median when there is an outlier in the data set.

example problem:

Find the mean, median and mode which is the best measure of center?

0,25,30,33,33,33,42,46,54

Measure of Variation

Mixing up the difference between a

statistical and non-statistical question

Measure of variation

- A measure that describes the distribution of a data set. That includes the range and the Interquartile Range.

Common mistakes

- If there is an odd set of numbers in data set make sure to include the numbers next to the median in the quartiles. Range equation:

maximum-minimum

This is how you find the IQR

Add all those numbers up, then divide by the original mean to find the answer.

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