Exam 1: Describing Data: Graphical
Exam 1: Describing Data: Graphical247 Questions
Exam 2: Describing Data: Numerical326 Questions
Exam 3: Probability345 Questions
Exam 4: Discrete Random Variables and Probability Distributions257 Questions
Exam 5: Continuous Random Variables and Probability Distributions239 Questions
Exam 6: Sampling and Sampling Distributions147 Questions
Exam 7: Estimation: Single Population151 Questions
Exam 8: Estimation: Additional Topics109 Questions
Exam 9: Hypothesis Testing: Single Population164 Questions
Exam 10: Hypothesis Testing: Additional Topics103 Questions
Exam 11: Simple Regression217 Questions
Exam 12: Multiple Regression252 Questions
Exam 13: Additional Topics in Regression Analysis168 Questions
Exam 14: Analysis of Categorical Data241 Questions
Exam 15: Analysis of Variance192 Questions
Exam 16: Time-Series Analysis and Forecasting138 Questions
Exam 17: Additional Topics in Sampling110 Questions
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Errors which arise even if the entire population is used are called nonsampling errors.
(True/False)
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The time (in hours)that a sample of 20 students studied for a statistics test are shown below
-Construct a cumulative frequency,cumulative relative frequency and cumulative percent distributions of the data.

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Which of the following statements involve inferential statistics as opposed to descriptive statistics?
(Multiple Choice)
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What percentage of the students in the sample went partying the weekend before the final exam and did well in the exam?
(Essay)
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A time-series plot measures time along the vertical axis and the numerical values of the variable of interest along the horizontal axis.
(True/False)
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Sampling error results from the fact that information is available on only a subset of all the population members.
(True/False)
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There are four levels of measurement within qualitative and quantitative data.
(True/False)
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At New York State University,800 students are randomly selected and asked the distance of their commute to campus.From this group a mean of 14.6 miles is computed.
-What is the variable of interest?
(Essay)
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What is the correct ranking of data from weakest or lowest level to strongest or highest level?
(Multiple Choice)
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In completing a survey,respondents use the following code numbers to indicate marital status:
1 = Single (never married),
2 = Married,
3 = Divorced,
4 = WidowedIs this data qualitative or quantitative? Explain.
(Essay)
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Suppose you own a DVD rental store.
-Give an example of a question concerning a possible relationship between two variables of interest to your DVD business.
(Essay)
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Convert the data to overall percentages.What patterns do you see in this table?
(Essay)
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Decisions are often based on incomplete information in an uncertain environment.
(True/False)
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We can describe graphically the shape of a distribution by a:
(Multiple Choice)
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If the sample is a good representation of the population,what percentage of the students in the population should we expect to spend the weekend studying and do poorly on the final exam?
(Essay)
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Which of the following is most likely a continuous numerical variable?
(Multiple Choice)
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A paper company is interested in estimating the proportion of trees in a 600-acre forest with diameters exceeding 2 feet.The company selects 30 plots (100 feet by 100 feet)from the forest and utilizes the information from the 30 plots to help estimate the proportion for the whole forest.
-What statistical term describes the 600-acre forest?
(Essay)
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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
An office supply warehouse has boxes of pencils,100 pencils to the box.Information about the entire warehouse as well as a sample of the boxes is shown below:
-What is the population size?

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One important principle that must be followed in the sample selection process is randomness.
(True/False)
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