Exam 1: Introduction to Data

The two- way table below shows teenage driver gender and whether or not the respondent had texted at least once while driving during the last thirty days. -What percentage of the sample were female drivers?

The two- way table below shows the survey results when sixty adults were asked whether they had made a clothing purchase in the last thirty days. -What percentage of the sample had not made a clothing purchase in the past thirty days?

Researches want to find out which U. S. movie has the most positive audience reaction for the current week. As they exited a randomly selected movie theater, movie- goers were asked to give the movie they had just viewed a letter grade of A, B, C, D, or F. In this scenario, the movie- goers are an example of a .

What is the rate of fatal injuries caused by Assault/Homicide in 2008?

The obesity rates of elementary age children living in urban areas are compared to those living in rural areas to see whether children in urban settings have higher obesity rates.

The ethnicity of the individual respondents in a political poll of a randomly selected group of adults is an example of what type of variable?

Explain what a numerical variable is and give an example of a numerical variable.

Suppose you are presented with a dataset containing the ages of 50 randomly selected adults and the amount of money they spent at a certain grocery store on a certain day. Which of following questions do not need to be asked about the dataset?

Identify the sample and the population it is most likely intended to represent: The manager at a bicycle store asks 30 customers if they would be interested in participating in a weekly group ride.

The two- way table below shows teenage driver gender and whether or not the respondent had texted at least once while driving during the last thirty days. -What percentage of the sample had texted at least once while driving in the past thirty days?

The gender of a sample of adults was recorded, and then they were asked whether they had used a postage stamp in the last thirty days. A good way to organize this categorical data is in a

The deacons at a local church surveyed the congregation to find out if members would be willing to fund a new construction project. In this example, what is the population of interest?

The average number of hours spent completing statistics homework for a randomly selected group of statistics students is an example of what type of variable?

Marital status of each member of a randomly selected group of adults is an example of what type of variable?

Which of the following measurements is likely to have the least variation?

In a survey, married couples were asked, "Do you have children?" The response was electronically recorded as a "1" for yes and a "0" for no. This is an example of .

The number of parents who attended parent teacher conferences at a local elementary school is an example of what type of variable?

How many men are in this sample? What percent of the sample are men? Round to the nearest whole percent.

Which of the following measurements is likely to have the most variation?

The smoking rates of teens in urban areas are compared to those living in rural areas to see whether teens living in rural settings have higher rates of smoking.