Chapter 3 Quiz

# Chapter 3 Quiz - (X) absolutedeviation interquartilerange...

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

_________________. absolute deviation interquartile range coefficient of variation z  score correlation coefficient The empirical rule says that approximately what percentage of the values would be  within 2 standard deviations of the mean in a bell shaped set of data? 68% 50% 97.7% 100% 95% Manuel Banales, Marketing Director of Plano Power Plants, Inc.'s Electrical Division, is  leading a study to assess the relative importance of product features. Two items on a  survey questionnaire distributed to 100 of Plano's customers asked them to rate the  importance of "ease of maintenance" and "efficiency of operation" on a scale of 1 to 10  (with 1 meaning "not important" and 10 meaning "highly important"). His staff  assembled the following statistics on these two items. Ease of Maintenance Efficiency of Operation Mean 7.5 6.0 Median 8.5 5.5 Mode 9.0 4.5 Standard Deviation 1.5 2.5 What can Manuel conclude from these statistics? The Ease of Maintenance distribution is not skewed.

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 07/25/2011 for the course DESI 3403 taught by Professor Black during the Fall '10 term at University of Houston.

### Page1 / 10

Chapter 3 Quiz - (X) absolutedeviation interquartilerange...

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

View Full Document
Ask a homework question - tutors are online