1.0 Identify whether the measurement scales in the following statements are Nomi
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1.0 Identify whether the measurement scales in the following statements are Nominal, Ordinal, Interval e. A market researcher rand years of age. or Ratio: a. Nationalities of survey respondents b. Test grades as A, B, C, D or F c. Temperatures of the occan at various depths d. Survey response as YES or NO e. Ranking of a tennis player based on total earnings f. Year of a historical event f. A pollster uses a compu sponding to those numb 1.10 Classify the following samp stratified, systematic, cluster a. A complete list of all sto kerage house. b. At the annual stockhold 1. Identify whether the following statements indicate the data are experimental or observational: c. Five different brokerageI who won shares of Coca d. A computer file of all sto random umbers genera e. All of the stockholdersz a. A marketing firm does a survey to ind out how many people use a product. Of the 100 pcople contacted, 15 say they use the product. b. A quallty control specialist compares the output from a machine with a new lubricant to the output of machines with the old lubricant c. A political pollster reports that his candidate has a 10% lead in the polls with 10% undecided d. A stock analyst selects a stock from a group of 20 for investment by choosing the stock with the each zip code. Select a random sample of number table, Table 1 in Ap tion the starting point. greatest earnings per share reported for the last quarte:r e. A clinic gives a drug to a group of 10 patlents and a placebo to another group of 10 patients to find out if the drug has an effect on the patients illness 1.12 Select a stratified random s school. There is a total of Appendix II Describe the n f. A sample of fish is taken from a lake to measure the effect of pollution from a nearby factory on the fish Identify whether the following statements indicate the data are experimental or observational: a. Investigation of the relationshipbetween the occurrence ofsickle-cell anemia and ethnic background b. Evaluation of a new technique of teaching first graders to read c. A study of female college graduates who go to graduate school d. A study of accident rates in urban areas e. Determination of the cffectiveness of an advertising progranm f. Evaluation of the new lighting system in a factory work area In a modern township, the Select a cluster sample of 1Explanation / Answer
1.6)
A categorical variable, also called a nominal variable, is for mutual exclusive, but not ordered, categories.
A ordinal variable, is one where the order matters but not the difference between values.
A interval variable is a measurement where the difference between two values is meaningful.
A ratio variable, has all the properties of an interval variable, and also has a clear definition of 0.0. When the variable equals 0.0, there is none of that variable.
so
a) Nominal Scale
b)ordinal scale
c)Ratio scale
d)Nominal Scale
e) Ordinal Scale
f)Interval Scale
1.8)
The data which is observed that is called observational data and the data which we get from some experiments that is called experimental data
a)Observational data
b)Experimental data
c)Observational data
d)Observational data
e)Experimental data
f)Experimental data
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