Measures of Central Tendency
- Calculations for both grouped and ungrouped data.
- Use raw scores when possible
- Use grouped formula to calculate from freq..... dist. or graph.
- Guessed Average & Arbitrary Origin methods are seldom used today, but we need to be aware of them.
- Raw score methods have the advantage of being more precise, because they use the exact value of every score in the distribution.
- Next we will discuss - The Median