{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# 2.5 - Comparing Mean Median and Mode For negatively(left...

This preview shows pages 1–8. Sign up to view the full content.

1 Comparing Mean, Median and Mode For negatively (left) skewed distributions Mean < Median < Mode Mode Median Mean

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

View Full Document
2 Skewed Right Mode Median Mean For positively skewed distributions Mean > Median > Mode
3 Symmetric Distribution Mean = Median = Mode For symmetric (not skewed) distributions Mean = Median = Mode

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

View Full Document
4 Variability Variability: No Variability:
5 Measures of Spread Different ways of computing the spread/ variability of a dataset. 1. Range 2. Variance 3. Standard Deviation 4. Inter Quartile Range (IQR)

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

View Full Document
6 Range RANGE = Maximum – Minimum Easy to find Easy to interpret Depends only on the two extreme values Two datasets with same range could possibly have completely different variability. Not “Robust” ( influenced by “outliers”)
7 Variance VARIANCE tells us the squared distance between a typical observation and the mean of the data. Average squared distance between all the observations and the mean.

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.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern