CHAPTER 1-Defining and Collecting Data #2-Fill in the blank: arises from failure

Question

CHAPTER 1-Defining and Collecting Data #2-Fill in the blank: arises from failure to collect data on all items in the sample and results in a nonresponse bias. b) When talking about numerical data and variables, those variables that result from a measurement process while are those variables that result from a counting process. are c) Of the four levels of measurement, categorical data are classified as either or while numerical data are classified as when there is a starting point or true zero, but as__when there is no true zero. d) In a subject matter. Although experts may be well informed, you cannot generalize their results to the population sample, you collect the opinions of preselected experts in the

Explanation / Answer

a) Selection Bias

b) Continuous variables are created by measurements like, height, weght etc.

Discrete variables are created by counting like number of people, houses etc.

c) categorical data are classified as Nomial (With no order) or Ordinal while numerical data are classified as ratio data when there is a true zero or as interval data when there is no true zero

d) Expert /Judment sample

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