Given each scenario, identify an appropriate type of chart or plot discussed in

Question

Given each scenario, identify an appropriate type of chart or plot discussed in class that you could use to determine the answer. (e.g. pie chart, scatterplot, etc.) a) A poll of 200 undergraduates was taken. The respondents were asked to list all the modes of transportation used going from their home to campus. b) Is the correlation between daily outside temperature and amount of natural gas used for heating positive or negative? c) We want to understand the Indiana yearly harvest (in tons) of soybeans between 1985 and 2015. d) We want to see if there is a relationship between the weight of a passenger vehicle and fuel efficiency (measured as miles per gallon). e) We want to understand the distribution of yearly household incomes in Tippecanoe County for 2012. f) We want to understand the distribution of cholesterol level for 100 males aged 20-30 g) What is the percentage of Indiana vehicles that are small passenger cars, large passenger cars, trucks, SUVs, and other types?

Explanation / Answer

A scatter plot can suggest various kinds of correlations between variables with a certain confidence interval.

Pie chart is a circular statistical graphic which is divided into slices to illustrate numerical proportion.

a) A poll of 200 undergraduates was taken. The respondents were asked to list all the modes of transportation used going from their home to campus.

Here, we want to know the proportion for various modes of transport. Thus, we will use Pie chart

b) Is the correlation between daily outside temperature and amount of natural gas used for heating positive or negative?

Here, we want to find correlation between two things (daily outside temperature and amount of natural gas used for heating) Thus, we will use Scatter plot

c) We want to understand the Indiana yearly harvest (in tons) of soybeans between 1985 and 2015.

Here, we want to find proportion of soyabean in each year. Thus, we will use Histogram

d) We want to see if there is a relationship between the weight of a passenger vehicle and fuel efficiency (measured as miles per gallon).

Here, we want to find correlation between two things (the weight of a passenger vehicle and fuel efficiency) Thus, we will use Scatter plot

e) We want to understand the distribution of yearly household incomes in Tippecanoe County for 2012.

Here, we want to understand distribution of single entity income. Thus, we will use histogram or Pie chart

f) We want to understand the distribution of cholesterol level for 100 males aged 20-30

Here, we want to understand distribution of single entity Choleserol level. Thus we will use Histogram.

We can also have Pie chart splitted in ranges of cholesterol level

g) What is the percentage of Indiana vehicles that are small passenger cars, large passenger cars, trucks, SUVs, and other types?

We want to check proportion. Thus, we will use Pie chart

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