Finite Chapter 8.3

# Finite Chapter 8.3 - Math 120 SP08 SBrodnick 8.3: Measures...

This preview shows pages 1–2. Sign up to view the full content.

Math 120 SP08 SBrodnick 1 1 8.3 : Measures of Central Tendency 2 8.3: Measures of Central Tendency * 100 people chose a # between 1 and 40. Ten people were chosen at random to reveal their choices: 8, 27, 15, 2, 34, 15, 21, 11, 27, 15 * This is a sample because it’s only 10 of the 100 peoples’ numbers (usually used) * If we had all 100 numbers that the people had chosen, then we would have the data for the entire population 3 * We want a single measurement, or statistic from this set of numbers – there are a few… * Average , or mean In this case, we get the sample mean If we had all 100 numbers, we’d get the population mean μ (“mu”) * Median m middle value (if # of values is odd), or average of middle two values (if # of values is even) when values are arranged in ascending order * Mode value that appears most often x 8.3: Measures of Central Tendency 4 * In the calculator STAT, EDIT, enter values in L1 STAT, CALC, 1-var stats, ENTER On the list,

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## Finite Chapter 8.3 - Math 120 SP08 SBrodnick 8.3: Measures...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online