Cairo University Faculty of Commerce Graduate Studies Ph.D. Program Statistics for Business Quiz
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Questions and Answers

Which type of variable is 'GPA' in the study?

  • Qualitative nominal
  • Qualitative ordinal
  • Quantitative discrete
  • Quantitative continuous (correct)

    • What type of data is 'Academic year' based on the given information?

  • Qualitative ordinal (correct)
  • Quantitative discrete
  • Quantitative interval
  • Qualitative nominal

    • In the context of the study, what does 'Number of credit hours' represent?

  • Quantitative continuous variable
  • Qualitative nominal variable
  • Quantitative discrete variable (correct)
  • Qualitative ordinal variable

    • Which variable in the study is a qualitative nominal variable?

    <p>Gender</p> Signup and view all the answers

    What type of variable is 'Student Age Groups' in the study?

    <p>Qualitative ordinal</p> Signup and view all the answers

    'Grades' in the study represent which type of data?

    <p>Qualitative ordinal</p> Signup and view all the answers

    What does the confidence interval of the research variables suggest about their means satisfaction?

    <p>The means of each variable have a range within which the true population mean is likely to lie</p> Signup and view all the answers

    In testing satisfaction with the professor, is the hypothesis a one-tailed or two-tailed test?

    <p>One-tailed</p> Signup and view all the answers

    What is the test statistic in the test regarding student satisfaction with the professor?

    <p>$-65.758$</p> Signup and view all the answers

    What does the P-value represent in hypothesis testing?

    <p>The probability of obtaining the observed data if the null hypothesis is true</p> Signup and view all the answers

    If the null hypothesis is rejected when it is actually true, what type of error is committed?

    <p>Type I error</p> Signup and view all the answers

    What does the power of a statistical test represent?

    <p>The probability of correctly rejecting a false null hypothesis</p> Signup and view all the answers

    What statistical test is being described in the given output?

    <p>Independent Samples Test</p> Signup and view all the answers

    Which scenario does the output suggest when it talks about rejecting the null hypothesis?

    <p>The average satisfaction is more than 3.</p> Signup and view all the answers

    What does 'Equal variances assumed' refer to in the output?

    <p>Assuming the variances of the two samples being compared are equal.</p> Signup and view all the answers

    In the context of the output, what does 'Std.Error Difference' represent?

    <p>The standard error of the mean difference between two samples.</p> Signup and view all the answers

    What does '95% Confidence Interval of the Difference Lower Upper' in the output help determine?

    <p>The limits within which the true difference between two means lies with 95% confidence.</p> Signup and view all the answers

    What can be inferred from a low p-value in the 'Sig.(2tailed)' column?

    <p>There is a significant difference between the means being compared.</p> Signup and view all the answers

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