Stats Hw

Topics: Level of measurement, Categorical distribution, Number Pages: 3 (504 words) Published: September 15, 2012
Statistics Homework – Week 2

Chapter 1:
1.1 -
Three different types of drinks are sold at a fast food restaurant – soft drinks, fruit juices and coffee. A) Explain why the type of drinks sold is an example of a categorical variable Categorical variables take values that fall into one or more categories. As there are 3 different types of drinks, they would all fall into their own categories rather than numerical.

B) Explain why the type of drinks sold is an example of a nominally scaled variable The type of drinks sold is an example of a nominally scaled variable as there are no rankings involved between the drinks. For example, each type of drink is equal.

1.3 -
Suppose that you measure the time it takes to download an MP3 file from the internet. A) Explain why the download is a numerical variable
Numerical variables record numbers through observations. As the time taken to download the file produces a number represented by time, the download is a numerical variable.

B) Explain why the download time is a ratio scaled variable The download time is a ratio scaled variable as the time differences involve a true zero point, meaning that they use the same time scale.

1.7 -
Suppose the following information is collected from Andrew and Fiona Chen on their application for a home mortgage loan at metro home loans: A) Monthly expenses; $1 820
Type: Numerical - Continuous
Level of measurement: Interval scale

B) Number of children being supported by applicant(s): 2
Type: Numerical - Discrete
Level of measurement: Interval scale

C) Annual family salary income; $95 000
Type: Numerical - Continuous
Level of measurement: Interval scale

D) Marital status: Married
Type: Categorical
Level of measurement: Ratio scale
Classify each of the responses by type of data and level of measurement. Chapter 2:

2.5
A)

B)
Pat should have on display many white, blue and red cars, as they make up over half of the...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Essay about STAT HW
  • Stat Essay
  • HW 1 STAT 252 Essay
  • Stats Essay
  • Essay on des stat
  • Stats Essay
  • stat Essay
  • Essay on Stats

Become a StudyMode Member

Sign Up - It's Free