7. If, at the annual stockholders’ meeting, a survey is conducted of all who att
ID: 3201730 • Letter: 7
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7. If, at the annual stockholders’ meeting, a survey is conducted of all who attend, what type of sampling is being used? (a) Random (b) Systematic (c) Convenience (d) Stratified (e) Cluster 8. Data that can be classified according to color are measured on what scale? (a) Nominal (b) Ordinal (c) Interval (d) Ratio 9. In an experiment when the effects from two or more variables cannot be distinguished from each other, what is said to have occurred? (a) Contrasting (b) Blinding (c) Commingling (d) Confounding 10. In the largest public health experiment ever conducted, 200,745 children were given a treatment consisting of the Salk vaccine, while 201,229 other children were given a placebo. The purpose of the experiment was to determine whether the Salk vaccine was effective in combating polio. What was the dependent variable in the study? (a) whether the subject received the polio vaccine or not (b) whether the subject contracted polio or not (c) whether the subject was given a placebo or not (d) whether the subject was a male or female child (e) The salk vaccine 11. The difference between a sample result and the true population result is knows as : (a) Population Error (b) Sampling Error (c) Non-sampling Error (d) Test Error 12. Data that provide information about relative comparisons, but not the magnitude of the differences is known as: (a) Nominal (b) Ordinal (c) Interval (d) Ratio 13. For a study in which subjects are treated with a new drug and then observed, is the study observational or is it an experiment? (a) Observational (b) Experiment 14. All of the following are ways in which statistics can be misused EXCEPT: (a)Precise Numbers (b) Small Samples (c) Random Samples (d) Order of Questions 15. In a ______sample, members from the population are selected in such a way that each individual member in the population has an equal chance of being selected. (a) Systematic (b)Precise (c) Stratified (d) Random 16. In a ______ study, data are observed, measured, and collected at one point in time. (a) Prospective (b) Retrospective (c)Rigorous (d) Cross-Sectional 17. Data in which differences are meaningful, but there is no natural zero starting point is known as: (a) Nominal (b) Ordinal (c) Interval (d) Ratio 18. On the day of the last presidential election, ABC News organized an exit poll in which specific polling stations were randomly selected and all the voters were surveyed as they left the premises. What type of sampling is being used? (a) Random (b) Systematic (c) Convenience (d) Cluster 19. Determine whether the given value is a statistic or parameter: The mean age of students at Broward College is 24.7 years. (a) Statistic (b) Parameter 20. Determine which of the four levels of measurement (nominal, ordinal, interval and ratio)is most appropriate for the data below: The social security numbers of students in this class (a) Nominal (b) Ordinal (c) Interval (d) Ratio Questions 21-23, pertain to the statement below: The state of Florida wanted to know what percent of adults over the age of 35, living in Florida, have a gun in their home. They used a Gallup poll in which 2059 randomly selected adults over the age of 35 living in Florida were asked the question “Do you have a gun in your home?” Results showed that 39% answered yes to the question. 21. What is the sample? (a)39% of 2059 randomly selected adults (b) Adults over the age of 35 (c)2059 randomly selected adults (d) 2059 randomly selected adults over the age of 35 22. What is the population? (a)39% of 2059 randomly selected adults (b) All adults over the age of 35 (c)2059 randomly selected adults (d) 2059 randomly selected adults over the age of 35 23. The results of the survey revealed that 39% of respondents have a gun in their home. The value of 39% is a _______? (a) Statistic (b) Parameter 24. A statistics professor obtains a sample of students by selecting the first 10 students entering his classroom. What type of sampling is he using? (a) Random (b) Systematic (c) Stratified (d) Cluster (e) Convenience 25. True or False. The interval level of measurement is like the ordinal level with the additional property that the difference between any two data values is meaningful. Moreover, data at this level have a natural zero starting point. (a) True (b) false 26. Which of the following statements are true? I. All variables can be classified as quantitative or qualitative variables. II. Qualitative variables can be continuous variables. III. Quantitative variables can be discrete variables. (a) I Only (b) I and III Only (c) III Only (d) I and II Only (e) All correct 27. Most psychology texts report that the average IQ score for an adult male is between 90 and 110. This average is an example of a: (a) Parameter (b) Sample (c) statistic (d) population (e) None of the above 28. The variable that changes due to the manipulation of the independent variable is called the: (a) Explanatory variable (b) outcome variable (c) manipulated variable 29. A sample in which the respondents themselves decide whether to be included is called a: (a) Self-serving (b)voluntary response (c) selection (d)convenience 30. What is the level of measurement for academic letter grades such as A, B, C D, F or W? (a)ratio (b) ordinal (c) nominal (d) interval (e)categorical 31. Questions 31-33 pertain to the following study: Agricultural researchers are investigating whether a new form of pesticide will lead to lower levels of insect damage to crops than the traditional pesticide. What is the independent variable in this study? (a) Agricultural researchers (b) Type of pesticide used (c) Levels of insect damage to crops (d) Traditional pesticide (e) Amount of crop produced 32. What is the dependent variable in this study? (a) Agricultural researchers (b) Type of pesticide used (c) Levels of insect damage to crops (d) Traditional pesticide (e) Amount of crop produced 33. Would this be an observational study or an experimental study? (a) Observational (b) Experimental Questions 34 – 38 pertain to the following: Of the adult U.S. population, 36% has an allergy. A sample of 1200 randomly selected adults resulted in 33.2% reporting an allergy. 34. What is the population? (a) All adults in the U.S. suffering from allergies (b) All adults in the U.S (c) 1200 randomly selected adults (d) 36% of the adult population (e) All adults in the U.S. without allergies 35. What is the sample? (a) 1200 randomly selected adults with allergies (b) All adults in the U.S (c) 1200 randomly selected adults (d) 36% of the adult population (e) 33.2% reporting an allergy 36. What is the value of the statistic? (a) 1200 randomly selected adults (b) 36% (c) 33.2% (d) 36% of 1200 randomly selected adults (e) 33.2% of the adult population 37. What is the value of the parameter? (a) 33.2% (b) 36% (c) 1200 randomly selected adults (d) 33.2% of the adult population (e) All adults in the U.S population 38. What is the level of measurement for the variable of interest? (a) Nominal (b) Ordinal (c) interval (d) ratio 39. What is another term for a qualitative variable? (a)numerical (b) statistical (c) categorical (d) dependent (e) experimental 40. You would like to estimate the percent of students at Broward College who believe that marijuana should be legalized. You get a list of the names and addresses of all students enrolled at the college from the registrar’s office. You send a survey in the mail to all students asking whether they believe that marijuana should be legalized. Identify the problem with this study. (a) The sample is too large (b) The sample is too small (c) The survey has a loaded question (d) It is a voluntary response sample (e) The sample size is not given
Explanation / Answer
First 20 questions answered
Result:
7. If, at the annual stockholders’ meeting, a survey is conducted of all who attend, what type of sampling is being used?
(c) Convenience
8. Data that can be classified according to color are measured on what scale?
(a) Nominal
9. In an experiment when the effects from two or more variables cannot be distinguished from each other, what is said to have occurred?
(d) Confounding
10. In the largest public health experiment ever conducted, 200,745 children were given a treatment consisting of the Salk vaccine, while 201,229 other children were given a placebo. The purpose of the experiment was to determine whether the Salk vaccine was effective in combating polio. What was the dependent variable in the study?
(b) whether the subject contracted polio or not
11. The difference between a sample result and the true population result is knows as :
(b) Sampling Error
12. Data that provide information about relative comparisons, but not the magnitude of the differences is known as:
(b) Ordinal
13. For a study in which subjects are treated with a new drug and then observed, is the study observational or is it an experiment?
(b) Experiment
14. All of the following are ways in which statistics can be misused EXCEPT:
(c) Random Samples
15. In a ______sample, members from the population are selected in such a way that each individual member in the population has an equal chance of being selected.
(d) Random
16. In a ______ study, data are observed, measured, and collected at one point in time.
(d) Cross-Sectional
17. Data in which differences are meaningful, but there is no natural zero starting point is known as:
(c) Interval
18. On the day of the last presidential election, ABC News organized an exit poll in which specific polling stations were randomly selected and all the voters were surveyed as they left the premises. What type of sampling is being used?
(d) Cluster
19. Determine whether the given value is a statistic or parameter: The mean age of students at Broward College is 24.7 years.
(a) Statistic
20. Determine which of the four levels of measurement (nominal, ordinal, interval and ratio)is most appropriate for the data below: The social security numbers of students in this class
(a) Nominal
21-23, pertain to the statement below: The state of Florida wanted to know what percent of adults over the age of 35, living in Florida, have a gun in their home. They used a Gallup poll in which 2059 randomly selected adults over the age of 35 living in Florida were asked the question “Do you have a gun in your home?” Results showed that 39% answered yes to the question.
21. What is the sample?
(d) 2059 randomly selected adults over the age of 35
22. What is the population?
(b) All adults over the age of 35
23. The results of the survey revealed that 39% of respondents have a gun in their home. The value of 39% is a _______?
(a) Statistic
24. A statistics professor obtains a sample of students by selecting the first 10 students entering his classroom. What type of sampling is he using?
(e) Convenience
25. True or False. The interval level of measurement is like the ordinal level with the additional property that the difference between any two data values is meaningful. Moreover, data at this level have a natural zero starting point.
(b) false
26. Which of the following statements are true? I. All variables can be classified as quantitative or qualitative variables. II. Qualitative variables can be continuous variables. III. Quantitative variables can be discrete variables.
(b) I and III Only
27. Most psychology texts report that the average IQ score for an adult male is between 90 and 110. This average is an example of a:
(a) Parameter
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