The table shows the weights (in pounds)and monthly incomes (in dollars)of nine randomly selected women between the ages of 18 and 65. \[\begin{array} { r | c | c | c | c | c | c | c | c | c } \text { Weight (lb) } & 113 & 132 & 155 & 122 & 166 & 140 & 118 & 129 & 185 \\ \hline \begin{array} { r } \text { Monthly Income } \\ \text { (dollars) } \end{array} & 1420 & 3650 & 5475 & 2310 & 4710 & 2910 & 1720 & 2460 & 4115 \end{array}\] If we use statistical methods to conclude that there is a correlation (or relationship or association)between the weights of women and their monthly incomes, can we conclude that by increasing her weight a woman can increase her monthly income?

No. If a correlation (or relationship or

Exam 1: Introduction to Statistics

Determine whether the given description corresponds to an observational study or an experiment. A doctor gives a new medication to half of his patients with the flu and a placebo to the other half of his patients with the flu.

Free

(Multiple Choice)

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Question 1

Correct Answer:

Verified

Explain the difference between stratified and cluster sampling.

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(Essay)

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Question 2

Correct Answer:

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In both cluster sampling and stratified sampling, sub -groups (clusters or strata) are formed. However, in
stratified sampling, all strata are used and a sample is selected from each strata. In cluster sampling, a sample of
the clusters is first selected, then all members of those clusters are selected.

Subscribers of the women's magazine Cosmopolitan are asked to participate in a survey about preferred cereals for breakfast. Are the results likely to be representative of all women? Of all subscribers of Cosmopolitan? Why or why not?

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(Essay)

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Question 3

Correct Answer:

Verified

No. Cosmopolitan attracts women with specific demographics and subscribers will not be representative of all
women, however, a sample well selected, will not be representative. No, this sample will not even be
representative of all Cosmopolitan subscribers because it is a voluntary response sample - subscribers
themselves choose whether to respond. Those with stronger opinions are more likely to respond so the sample
is unlikely to be representative of all subscribers to the magazine.

Correlation does not imply _____________

(Multiple Choice)

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Question 4

Determine which of the four levels of measurement is most appropriate. Students' grades of A, B, or C, on a test.

(Multiple Choice)

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Question 5

Determine which of the four levels of measurement is most appropriate. Level of satisfaction of survey respondents.

(Multiple Choice)

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Question 6

The good design of experiments includes blinding, _, and ______.

(Multiple Choice)

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Question 7

The similarity between an ordinal level of measurement and an interval level of measurement is that _______________.

(Multiple Choice)

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Question 8

The table shows the weights (in pounds)and monthly incomes (in dollars)of nine randomly selected women between the ages of 18 and 65. Weight (lb) 113 132 155 122 166 140 118 129 185 Monthly Income (dollars) 1420 3650 5475 2310 4710 2910 1720 2460 4115 If we use statistical methods to conclude that there is a correlation (or relationship or association)between the weights of women and their monthly incomes, can we conclude that by increasing her weight a woman can increase her monthly income?

(Essay)

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Question 9

Which type of experiment separates subjects into groups that are similar but differ in ways that might affect the outcome of the experiment?

(Multiple Choice)

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Question 10

Identify which type of sampling is used. A tax auditor selects every 1000th income tax return that is received.

(Multiple Choice)

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Question 11

Identify which type of sampling is used. To avoid working late, a quality control analyst simply inspects the first 100 items produced in a day.

(Multiple Choice)

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Question 12

Which of the following does not apply to the ratio level of measurement?

(Multiple Choice)

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Question 13

A teacher was interested in knowing how much tax people pay in the United States. selected a simple random sample of her friends and asked them about their taxes. Is this sample likely to be representative of all adults in the United States?

(Essay)

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Question 14

A lawyer surveyed a simple random sample of his colleagues and asked them whether they were left-handed or right-handed. Is this convenience sample likely to provide results typical of all adults in the United States? Do convenience samples in general provide good results?

(Essay)

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Question 15

Determine whether the given value is a statistic or a parameter. Thirty percent of all dog owners poop scoop after their dog.

(Multiple Choice)

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Question 16

A marijuana survey included 1610 responses from a list of approximately 241,500,000 adults in the U.S. from which every 150,000th name was surveyed. Identify which of these types of sampling is used:

(Multiple Choice)

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Question 17

Identify the sample and population. Also, determine whether the sample is likely to be representative of the population. An employee at the local ice cream parlor asks three customers if they like chocolate ice cream.

(Essay)

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Question 18

On a test, 74% of the questions are answered correctly many questions are on the test?

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Question 19

Determine whether the given value is a statistic or a parameter. After taking the first exam, 15 of the students dropped the class.

(Multiple Choice)

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Question 20

Showing 1 - 20 of 60

Determine whether the given description corresponds to an observational study or an experiment. A doctor gives a new medication to half of his patients with the flu and a placebo to the other half of his patients with the flu.

Explain the difference between stratified and cluster sampling.

Subscribers of the women's magazine Cosmopolitan are asked to participate in a survey about preferred cereals for breakfast. Are the results likely to be representative of all women? Of all subscribers of Cosmopolitan? Why or why not?

Correlation does not imply _____________

Determine which of the four levels of measurement is most appropriate. Students' grades of A, B, or C, on a test.

Determine which of the four levels of measurement is most appropriate. Level of satisfaction of survey respondents.

The good design of experiments includes blinding, _, and ______.

The similarity between an ordinal level of measurement and an interval level of measurement is that _______________.

Which type of experiment separates subjects into groups that are similar but differ in ways that might affect the outcome of the experiment?

Identify which type of sampling is used. A tax auditor selects every 1000th income tax return that is received.

Identify which type of sampling is used. To avoid working late, a quality control analyst simply inspects the first 100 items produced in a day.

Which of the following does not apply to the ratio level of measurement?

A teacher was interested in knowing how much tax people pay in the United States. selected a simple random sample of her friends and asked them about their taxes. Is this sample likely to be representative of all adults in the United States?

A lawyer surveyed a simple random sample of his colleagues and asked them whether they were left-handed or right-handed. Is this convenience sample likely to provide results typical of all adults in the United States? Do convenience samples in general provide good results?

Determine whether the given value is a statistic or a parameter. Thirty percent of all dog owners poop scoop after their dog.

A marijuana survey included 1610 responses from a list of approximately 241,500,000 adults in the U.S. from which every 150,000th name was surveyed. Identify which of these types of sampling is used:

Identify the sample and population. Also, determine whether the sample is likely to be representative of the population. An employee at the local ice cream parlor asks three customers if they like chocolate ice cream.

On a test, 74% of the questions are answered correctly many questions are on the test?

Determine whether the given value is a statistic or a parameter. After taking the first exam, 15 of the students dropped the class.

Exploring Data With Tables and Graphs

Describing, Exploring, and Comparing Data

Probability

Discrete Probability Distributions

Normal Probability Distributions

Estimating Parameters and Determining Sample Sizes

Hypothesis Testing

Inferences From Two Samples

Correlation and Regression

Goodness-Of-Fit and Contingency Tables

Analysis of Variance

Nonparametric Tests

Statistical Process Control

Filters

Exam 1: Introduction to Statistics

Determine whether the given description corresponds to an observational study or an experiment. A doctor gives a new medication to half of his patients with the flu and a placebo to the other half of his patients with the flu.

Explain the difference between stratified and cluster sampling.

Subscribers of the women's magazine Cosmopolitan are asked to participate in a survey about preferred cereals for breakfast. Are the results likely to be representative of all women? Of all subscribers of Cosmopolitan? Why or why not?

Correlation does not imply _____________

Determine which of the four levels of measurement is most appropriate. Students' grades of A, B, or C, on a test.

Determine which of the four levels of measurement is most appropriate. Level of satisfaction of survey respondents.

The good design of experiments includes blinding, _____________, and __________________.

The similarity between an ordinal level of measurement and an interval level of measurement is that _______________.

Which type of experiment separates subjects into groups that are similar but differ in ways that might affect the outcome of the experiment?

Identify which type of sampling is used. A tax auditor selects every 1000th income tax return that is received.

Identify which type of sampling is used. To avoid working late, a quality control analyst simply inspects the first 100 items produced in a day.

Which of the following does not apply to the ratio level of measurement?

A teacher was interested in knowing how much tax people pay in the United States. selected a simple random sample of her friends and asked them about their taxes. Is this sample likely to be representative of all adults in the United States?

A lawyer surveyed a simple random sample of his colleagues and asked them whether they were left-handed or right-handed. Is this convenience sample likely to provide results typical of all adults in the United States? Do convenience samples in general provide good results?

Determine whether the given value is a statistic or a parameter. Thirty percent of all dog owners poop scoop after their dog.

A marijuana survey included 1610 responses from a list of approximately 241,500,000 adults in the U.S. from which every 150,000th name was surveyed. Identify which of these types of sampling is used:

Identify the sample and population. Also, determine whether the sample is likely to be representative of the population. An employee at the local ice cream parlor asks three customers if they like chocolate ice cream.

On a test, 74% of the questions are answered correctly many questions are on the test?

Determine whether the given value is a statistic or a parameter. After taking the first exam, 15 of the students dropped the class.

Exploring Data With Tables and Graphs

Describing, Exploring, and Comparing Data

Probability

Discrete Probability Distributions

Normal Probability Distributions

Estimating Parameters and Determining Sample Sizes

Hypothesis Testing

Inferences From Two Samples

Correlation and Regression

Goodness-Of-Fit and Contingency Tables

Analysis of Variance

Nonparametric Tests

Statistical Process Control

Filters

The good design of experiments includes blinding, _, and ______.