1. STATISTICS Dice Activity Stats Operational Definition Cookie Lab
Homework: Module 6 Outline
EQ:
Describe the three measures of central tendency, and discuss the relative usefulness of the two measures of variation.

2. Central Measures of Tendancy
Mode: Most often or frequently occurring score.
Mean: The average score
Median: Is the mid-point or the score in the middle

3. Dice Activity

4. Debrief Dice Activity

5. Standard Deviation
Measure of “spread.”
Average distance from the Mean
Low standard deviation looks like:
High standard deviation looks like:

6. Descriptive Statistics: Presents or organizes data
Types of statistics
Descriptive Statistics: Presents or organizes data
EX: organizing data into a graph
Inferential Statistics: Drawing conclusions from data
EX: Recognizing that the dice graph shows a bell curve.

7. Statistical Significance
What if your dice graph looked like this?

8. Operational Definition
An operational definition is how you define something for the purpose of the study.
Ex: If you were to conduct a study about depression, how would you define depression? Consider:
Do you include post partum depression?
Do you include people who self report, but are not diagnosed?
How recent does the diagnosis have to be?
What symptoms are you focusing on?
Does depression have to be consistent for a period of time? Can the symptoms come in waves?

9. Cookie Lab