Measures of Central Tendency

# Measures of Central Tendency - Stats: Measures of Central...

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

Stats: Measures of Central Tendency The term "Average" is vague Average could mean one of four things. The arithmetic mean, the median, midrange, or mode. For this reason, it is better to specify which average you're talking about. Mean This is what people usually intend when they say "average" Population Mean: Sample Mean: Frequency Distribution: The mean of a frequency distribution is also the weighted mean. Median The data must be ranked (sorted in ascending order) first. The median is the number in the middle. To find the depth of the median, there are several formulas that could be used, the one that we will use is: Depth of median = 0.5 * (n + 1) Raw Data The median is the number in the "depth of the median" position. If the sample size is even, the depth of the median will be a decimal -- you need to find the midpoint between the numbers on either side of the depth of the median. Ungrouped Frequency Distribution

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.

## This note was uploaded on 10/18/2011 for the course STA 2023 taught by Professor Bagwhandee during the Spring '07 term at University of Central Florida.

### Page1 / 3

Measures of Central Tendency - Stats: Measures of Central...

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

View Full Document
Ask a homework question - tutors are online