Essentials of Statistics (6th Edition)
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This is a voluntary response sample; we cannot ... more
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While statistical significance is applied to reach... more
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No, the two situations do not interact, so that ... more
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No. ; The organization has measured the amount of ... more
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No. ; The organization has measured the amount of ... more
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Yes. ; The conclusion stated in the article can be... more
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Flawed. ; The example shown here comes from a ... more
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Flawed. ; The example shown here comes from a ... more
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Sound. ; The selection has been done randomly, and... more
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Sound. ; The selection has been done randomly, and... more
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Yes, it has statistical significance and also a ... more
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Yes, it has statistical significance and also a ... more
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No statistical significance and no practical ... more
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No statistical significance and no practical ... more
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Yes. ; The temperature values that are recorded in... more
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No. ; Even the researchers work in the same ... more
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Any possible correlation between the two sets of ... more
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There is no statistical significance. ; Given the ... more
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The difference is meaningless. ; The white blood ... more
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One issue can be a possible correlation. ; Since ... more
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No. ; The organization which provided the survey ... more
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No. ; It is known that the correlation does not ... more
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The sponsor. ; The sponsor of the survey is ... more
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It appears to be a voluntary type of response. ; ... more
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Correlation doesn't imply causality. ; The example... more
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The source is questionable. ; The sponsor of the ... more
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A percentage greater than 100% is meaningless. ; ... more
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Discrepancy between the claim and reality. ; 100% ... more
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A percentage greater than 100% is meaningless. ; ... more
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The percentages shouldn't be added in this ... more
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Wording, sample size, voluntary response and wrong... more
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There are wrong percentage values. ; The sample ... more
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Population is all adults in the US; 33% represents... more
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Since the number of people is represented by a ... more
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Statistic. ; The 48 flights selected randomly ... more
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Statistic. ; The 2799 adolescent residents ... more
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Parameter. ; The census is addressing the entire ... more
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Parameter. ; From the given text we understand ... more
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Statistic. ; The study refers to a selected group ... more
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Statistic. ; The study refers to a selected group ... more
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Parameter. ; The study refers to the entire ... more
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Parameter. ; The study refers to all the elements ... more
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Continuous. ; The weights have various values, and... more
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Continuous. ; The heights have various values, and... more
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Discrete. ; The number of cars serviced each hour ... more
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Discrete. ; The number of representatives present ... more
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Discrete. ; The numbers of cars manufactured ... more
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Continuous. ; The lengths of feet have various ... more
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Continuous. ; The times recorded are in hours, ... more
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Discrete. ; The numbers of motor vehicle ... more
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Ordinal. ; The ranks have names/labels (1st, 2nd, ... more
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Nominal. ; The parties have names, so that they ... more
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Nominal. ; The colors have names, so that they are... more
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Ratio ; The time necessary to place an order has a... more
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Interval. ; The times in years have numerical ... more
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Ordinal. ; The rates have their names and also a ... more
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Ordinal. ; The blood lead levels have their names... more
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Interval. ; The body temperatures are numerical ... more
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Nominal level of measurement; they are just labels... more
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Nominal level of measurement; they are just labels... more
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Interval level of measurement; the comparison such... more
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Ordinal level of measurement; the differences ... more
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Experiment, because a treatment has been applied... more
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Two levels of blinding for the experiment. ; ... more
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Because of large sample sizes. ; All three groups ... more
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Convenience sampling. Doesn't appear to negatively... more
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Convenience sampling. Doesn't appear to negatively... more
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Observational, because no treatment has been ... more
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14.34%, which is a low response rate. ; To find ... more
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Systematic. ; A systematic sampling method uses a ... more
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Convenience. ; It says that the sample data was ... more
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Random. ; It says that the sample data was ... more
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Stratified. ; The population is divided in two big... more
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Cluster. ; The population is divided into classes... more
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Random. ; The initial selection of the 641 ... more
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Stratified. ; The population of books has been ... more
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Systematic. ; The example presented here uses a ... more
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Random. ; The initial assignment of the subjects ... more
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Cluster. ; The polling stations represent here ... more
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Convenience. ; Since the answers to the ... more
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Systematic. ; An algorithm of selecting the ... more
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Observational study. The convenience method ... more
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Experiment. It can be wrong to include only males ... more
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Experiment. It is illegal and very dangerous to ... more
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Observational study. The small sample is too small... more
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Experiment. It is using only one location. ; Since... more
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Experiment. ; Since there is a treatment applied ... more
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Observational study. The second question can be ... more
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Observational study. Too small and biased sample... more
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Prospective study. ; Even though the study has ... more
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Retrospective study. ; Since the researchers ... more
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Cross-sectional study. ; It appears that the data ... more
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Prospective study. ; Even though the study has ... more
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Matched pairs design. ; The effect of the ... more
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Randomized block design. ; The study divides the ... more
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Completely randomized design. ; The study randomly... more
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Matched pairs design. ; The effect of the ... more
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No. ; The numbers are simple labels for the listed... more
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Nominal. ; Since the numbers are simple labels for... more
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Continuous. ; Since the weights can be represented... more
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Quantitative data. ; Since the birth weights can ... more
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Ratio. ; The birth weight are labeled by their ... more
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Statistic. ; The percentage of 26% is referring to... more
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No. ; The text says that are randomly selected and... more
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Observational study. ; There is no treatment ... more
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The subjects don't know whether they are getting ... more
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Simple random sample. ; Out of the four types of ... more
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The sponsor of the survey. ; The sponsor of the ... more
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Randomization: The subjects were randomly selected... more
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No. ; While the two data sets can present some ... more
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This is an example of systematic sampling, since a... more
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Yes, it does. ; First, presented like in this ... more
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No statistical significance, nor practical ... more
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Mean = 3162.5 grams. The weights were rounded to ... more
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0.015625 ; The value of Can be obtained in two ... more
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Yes, it is. ; The value of the expression is ; ... more
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- 6.64 ; Since the expression is a complex one, we... more
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1067 ; We will evaluate it step by step, applying ... more
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575 grams ; The highest sample value is 4000 grams... more
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27,343.75 ; Applying the Order of Operations ... more
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0.20 ; Applying the Order of Operations Agreement... more
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0.00065536 ; The scientific form of the answer for... more
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31,381,059,609 ; The scientific form of the answer... more
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78,364,164,096 ; The scientific form of the answer... more
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0.000000531441 ; Write the scientific form of the ... more
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Males who are not symphony conductors; no ; ... more
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They should be compared to the general population ... more
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Males who are on medicare have a higher life ... more
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Randomly take a large sample of men who are ... more
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A difference of the standing pulse is . The ... more
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The results of the survey show that the biased ... more
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The people most likely to respond will be those ... more
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It is more appealing to a reviewer to write a very... more
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If watching cable television instead of internet ... more