Exam-1-Universe-Ch2-A

Exam-1-Universe-Ch2-A - BUS-271 Exam-1 Universe Answers...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 BUS-271 Exam-1 Universe Answers 2011-09-07 CHAPTER 2 201. [Chapter 2; 24 points] (Definitions) a) [4 p.] Define the terms “frequency” and “relative frequency” as they pertain to a data set “Frequency” simply refers to a count of the number of entitie s that gave the same answer to a question, or who fall into the same category. (Drive the same car, fall into the same income bracket.) “Relative frequency” refers to the fraction or % that a frequency makes out of the whole number of observations in the data set. b) [4 p.] Using the following data set, calculate relative frequencies for each category: Age Count b: rel.freq. c: cum.rel.freq. ----- -------- ------------- ------------------ 21 23 10 10/50=0.20 0.20 24 26 14 14/50=0.28 0.2+0.28=0.48 27 29 17 17/50=0.34 0.48+0.34=0.82 30 32 7 7/50=0.14 0.82+0.14=0.96 33 35 2 2/50=0.04 0.96+0.04=1.00 -------- n=50 c) [4 p.] Calculate cumulative relative frequencies for each category (Above)
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 d) [4 p.] Draw an Ogive for this data set. Use a separate sheet (at end). An Ogive is a graph of cumulative frequency or cumulative relative frequency. It rises from zero to n (or to 1.00). e)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 09/23/2011.

Page1 / 5

Exam-1-Universe-Ch2-A - BUS-271 Exam-1 Universe Answers...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online