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) _______.
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Question 2 of 40
2. Question
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 ______.
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Question 3 of 40
3. Question
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…
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Question 4 of 40
4. Question
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…
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Question 5 of 40
5. Question
The statistical methods used on sample data in order to provide general population information are known as…
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Question 6 of 40
6. Question
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 _________.
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Question 7 of 40
7. Question
The statistical methods that summarize, organize, and simplify data for presentation are known as…
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Question 8 of 40
8. Question
A property or characteristic of a population is called a…
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Question 9 of 40
9. Question
A property or characteristic of a subset of the population is called a…
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Question 10 of 40
10. Question
A measured / observed group of individuals from the population that has been selected for analysis is called a…
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Question 11 of 40
11. Question
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:
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Question 12 of 40
12. Question
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:
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Question 13 of 40
13. Question
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?
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Question 14 of 40
14. Question
Which of the following represents a population, as opposed to a sample?
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Question 15 of 40
15. Question
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?
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Question 16 of 40
16. Question
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?
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Question 17 of 40
17. Question
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?
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Question 18 of 40
18. Question
Correlational studies have
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Question 19 of 40
19. Question
Experimental studies have
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Question 20 of 40
20. Question
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?
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Question 21 of 40
21. Question
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 __________.
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Question 22 of 40
22. Question
Which of the following is an example of a discrete variable?
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Question 23 of 40
23. Question
Which of the following is an example of a continuous variable?
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Question 24 of 40
24. Question
Measuring the time it takes to solve a puzzle (in seconds) gives us data that is which scale of measurement?
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Question 25 of 40
25. Question
True or False? The age groups of movie-goers (3-13, 14-64, 65+) is an interval variable.
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Question 26 of 40
26. Question
True or False? The letter grades assigned at the end of semester by your professor are nominal.
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Question 27 of 40
27. Question
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?
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Question 28 of 40
28. Question
According to the Order of Mathematical Operations, how should we begin solving (ΣX)2 ?
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Question 29 of 40
29. Question
According to the Order of Mathematical Operations, which step comes last when solving (ΣX)2 ?
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Question 30 of 40
30. Question
Which step comes last when solving the expression Σ(X – 5)2?
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Question 31 of 40
31. Question
Determine the value of (ΣX)2 for the scores: 3, 4, 2
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Question 32 of 40
32. Question
Determine the value of ΣX2 for the scores: 0, 2, 3, 1
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Question 33 of 40
33. Question
Find the value of ΣX + 2 for the scores: 0, 2, 3, 1
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Question 34 of 40
34. Question
Find the value of Σ(X + 2) for the scores: 0, 1, 3, 1
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Question 35 of 40
35. Question
Calculate Σ(X – 1)2 for the scores: 4, 1, 3, 1
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Question 36 of 40
36. Question
Calculate (ΣX)2 for the scores: 0, 2, 3, 1
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Question 37 of 40
37. Question
Calculate ΣX + 2 for the scores: 0, 2, 5
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Question 38 of 40
38. Question
Find the value of Σ(X + 2) for the scores: 3, 4, 6.
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Question 39 of 40
39. Question
Find the value of Σ(X – 1) for the scores: 0, 2, 5
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Question 40 of 40
40. Question
Determine the value of Σ(X – 1 )2 for the scores: 3, 4, 6