JoVAC Data Science Assesment - 1

What is an appropriate way to visualize a list of the eye colors of 120 people? Select all that apply.

• box plot

• pie chart

• dot plot

• scatter plot

You want to investigate whether households in California tend to have a higher income than households in Massachusetts. Which summary measure would you use to compare the two states?

• mean household income

• 3rd quartile of household income

• median household income

Suppose all household incomes in California increase by 5%. How does that change the mean household income?

• the mean household income doesn't change

• cannot be determined from the information given

• the mean household income goes up by 5%

Suppose all household incomes in California increase by 5%. How does that change the median household income?

• cannot be determined from the information given

• median household income goes up by 5%

• the median household income doesn't change

Suppose all household incomes in California increase by 5%. How does that change the standard deviation of the household incomes?

• the standard deviation of the household incomes goes up by 5%

• cannot be determined from the information given

• the standard deviation of the household incomes doesn't change

Suppose all household incomes in California increase by 5%. How does that change the interquartile range of the household incomes?

• the interquartile range of the household incomes doesn't change

• the interquartile range of the household incomes goes up by 5%

• cannot be determined from the information given

  
  

Suppose all household incomes in California increase by $5,000. How does that change the mean household income?

• cannot be determined from the information given

  
  

• the mean household income goes up by $5,000

  
  

• the mean household income doesn't change

  
  

Suppose all household incomes in California increase by $5,000. How does that change the median household income?

• the median household income goes up by $5,000

• cannot be determined from the information given

• the median household income doesn't change

Suppose all household incomes in California increase by $5,000. How does that change the standard deviation of the household incomes?

• cannot be determined from the information given

• the standard deviation of the household incomes doesn't change

• the standard deviation of the household incomes goes up by $5,000

Suppose all household incomes in California increase by $5,000. How does that change the interquartile range of household incomes?

• cannot be determined from the information given

• the interquartile range of the household incomes doesn't change

• the interquartile range of the household incomes goes up by $5,000