Chapter 1 Quiz

A professor conducts a survey to explore the study habits of university students. From the 91 responses received, the professor finds that university students spend an average of 5.2 hours each week studying outside of the class. For this study, the average of 5.2 hours is an example of a(n) _______.

A scientist is interested in the sleeping behavior of cats and selects a group of 33 cats to be tested. The group of 33 cats is an example of a ______.

A campaign manager is interested in determining the average age of voters in the state of New York. The entire group of voters in New York is an example of a…

A campaign manager is intersted in determining the average age of voters in the state of New York. The average age, if it were possible to determine, would be an example of a…

The statistical methods used on sample data in order to provide general population information are known as…

We are typically forced to study a select group of participants known as a _________, when in fact what we really want to understand is the larger group known as the _________.

The statistical methods that summarize, organize, and simplify data for presentation are known as…

A property or characteristic of a population is called a…

A property or characteristic of a subset of the population is called a…

A measured / observed group of individuals from the population that has been selected for analysis is called a…

In a sample of 600 students in a university, 180 of them or 30% visit StatsDoesntSuck.com on a weekly basis. The 30% is an example of a:

A student who is running for student council president at a school with an enrollment of 50,000 students decides to conduct a survey. In the survey, 62% of the 400 eligible student voters surveyed say they plan to vote for him. The population of interest is the:

You asked seven of your classmates about their GPA. From your survey results, you conclude that the average GPA of all students at York is 4.0. What is the an illustration of?

Which of the following represents a population, as opposed to a sample?

The average height of all students in the introductory statistics class (males and females) is 167cm. Nevertheless, if you chose a sample of 30 students and calculate their average height you most likely will not get 167cm exactly. Which of the following terms describes the expected difference between sample means and their corresponding population means?

In one study, students read a fictitious job application. The applications are identical except that half have a female name (“Joan”) and half have a male name(“John”). The students rate the likelihood of the applicant succeeding at the job. What is the dependent variable?

A research study indicates that children who took their standardized test within 30 minutes after recess scored higher on average than children who took their test directly before recess. For this study, what is the independent variable?

Correlational studies have

Experimental studies have

In a recent study, left handed participants were compared with right-handed participants in terms of the time it took them to solve a jigsaw puzzle. The handedness of the participant is an example of what kind of variable?

A researcher teaches two sets of students for one day, using active learning strategies with the first groups and passive learning strategies with the second. The students are then given a test and the number of correct answers are recorder. In this study, the independent variable is __________ and the dependent variable is __________.

Which of the following is an example of a discrete variable?

Which of the following is an example of a continuous variable?

Measuring the time it takes to solve a puzzle (in seconds) gives us data that is which scale of measurement?

True or False? The age groups of movie-goers (3-13, 14-64, 65+) is an interval variable.

True or False? The letter grades assigned at the end of semester by your professor are nominal.

Imagine that two participants (Janet and Bob) were given scores in a study, and that Janet’s score was 3 points lower than Bob’s. Which scale of measurement are these scores an example of?

According to the Order of Mathematical Operations, how should we begin solving (ΣX)2 ?

According to the Order of Mathematical Operations, which step comes last when solving (ΣX)2 ?

Which step comes last when solving the expression Σ(X – 5)2?

Determine the value of (ΣX)2 for the scores: 3, 4, 2

Determine the value of ΣX2 for the scores: 0, 2, 3, 1

Find the value of ΣX + 2 for the scores: 0, 2, 3, 1

Find the value of Σ(X + 2) for the scores: 0, 1, 3, 1

Calculate Σ(X – 1)2 for the scores: 4, 1, 3, 1

Calculate (ΣX)2 for the scores: 0, 2, 3, 1

Calculate ΣX + 2 for the scores: 0, 2, 5

Find the value of Σ(X + 2) for the scores: 3, 4, 6.

Find the value of Σ(X – 1) for the scores: 0, 2, 5

Determine the value of Σ(X – 1 )2 for the scores: 3, 4, 6