If you are looking at the variable “type of music”, and people list their favori

Question

If you are looking at the variable “type of music”, and people list their favorite (e.g., rock, country), its scale of measurement is: To show an overall pattern, or distribution, of scale data, Nolan & Heinzen discusses two tables and two graphs. The two types of graphs are: A news source published a bar graph reporting the percent of the USA population who distrust the election process. For their study, they only sampled people who answer their home phone between 10am and 2pm, when most working Americans are not at home. Which technique discussed by Nolan & Heinzen is used to mislead the consumer? Which type of visual display of data is used more often in the media when you have a nominal independent variable with only a few categories and a scale dependent variable?

Explanation / Answer

If you are looking at the variable “type of music”, and people list their favorite (e.g., rock, country), its scale of measurement is

1) The scale of measurement is Nominal .

To show an overall pattern, or distribution, of scale data, Nolan & Heinzen discusses two tables and two graphs. The two types of graphs are:

The two types of graphs are Histogram and Frequency Polygon

A news source published a bar graph reporting the percent of the USA population who distrust the election process. For their study, they only sampled people who answer their home phone between 10am and 2pm, when most working Americans are not at home. Which technique discussed by Nolan & Heinzen is used to mislead the consumer?

this was a case of biased sampling as most of the americans were not at home and went to work , hence the sample is not a true representative of the population. Probably , only those who stayed at home or were not working were selected as samples and would not represent the true population under consideration

Which type of visual display of data is used more often in the media when you have a nominal independent variable with only a few categories and a scale dependent variable?

pie charts are used when we have nominal independent variable with few categories and a scale dependent variable that can be presented in the form of percentages in pie chart

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