Statistics

1. What does the letter t represent in the following: t(58) = 2.001, p (Points : 2)

Question 2. 2. What does the number 2.001 represent in the following: t(58) = 2.001, p (Points : 2)

Question 3. 3. A measure of how different two groups are from one another is the __________.
(Points : 2)

Question 4. 4. When computing effect size, the sample size is ________. (Points : 2)

Question 5. 5. If you want to examine one group of subjects under two different conditions, which statistical techniques should you select? (Points : 2)

Question 6. 6. What is another name that statisticians talk about dependent tests? (Points : 2)

Question 7. 7. In the formula that computes a t value, what does nSD represent? (Points : 2)

Question 8. 8. The test statistic calculated by the statistical procedure selected is known as the ___________. (Points : 2)

Question 9. 9. If the obtained value is less than the critical value, what should you do? (Points : 2)

Question 10. 10. How many subjects were examined based on the following: t(29) = 2.001, p (Points : 2)

Question 11. 11. What is another name for a dependent samples t-test? (Points : 2)

Question 12. 12. Which of the following represent degrees of freedom? (Points : 2)

Question 13. 13. What is the numerator of the t-test for Dependent means formula? (Points : 2)

Question 14. 14. In the equation t (78) = 1.03, p (Points : 2)

Question 15. 15. Which of the following is the same as t2 when examining the difference between two groups?
(Points : 2)

Question 16. 16. What type of ANOVA is used when there is only one type of treatment or grouping factor with more than two levels? (Points : 2)

Question 17. 17. If you wanted to examine whether the level of parental involvement differs based on students' grade in school (i.e. 1st, 2nd, 3rd, etc.), what is the dependent variable of interest? (Points : 2)

Question 18. 18. Which of the following is the formula for computing the F statistic? (Points : 2)

Question 19. 19. The variability between groups is due to ______________. (Points : 2)

Question 20. 20. When you compute the sum of the differences between each individual score and the group mean, you have calculated the _____________. (Points : 2)

Question 21. 21. When interpreting F (2, 27) = 8.80, p
  (Points : 2)

Question 22. 22. When interpreting F (2, 27) = 8.80, p
  (Points : 2)

Question 23. 23. In a 4 x 3 factorial design, there are how many levels of the second grouping factor? (Points : 2)

Question 24. 24. ANOVA first tests for an overall difference between the means. This is known as what type of test? (Points : 2)

Question 25. 25. ANOVA with replication is also known as ___________. (Points : 2)

Question 26. 26. When type of design includes an ANOVA where one factor is repeated and the other is not? (Points : 2)

Question 27. 27. When analysis of data reveals a difference between levels of a factor, what is this called? (Points : 2)

Question 28. 28. Results from an ANOVA are placed in what type of table? (Points : 2)

Question 29. 29. Which of the following would be an example of a design that examines the effects gender and SES ( high SES and low SES) on a test of student achievement? (Points : 2)

Question 30. 30. When you are interested in finding out if students' achievement level changes over time as result of a reading intervention, what type of ANOVA would you use?
(Points : 2)

Question 31. 31. What type of ANOVA would examine effects of political party (eg. democrat, republican, or independent) affiliation and gender on the attitudes toward the death penalty? (Points : 2)

Question 32. 32. Which of the following would be an example of a design that examines the effects gender and school type (i.e. elementary, middle, high school) on a scale of student attitudes toward learning? (Points : 2)

Question 33. 33. The effect of one factor is called the _____________. (Points : 2)

Question 34. 34. How many null hypotheses are used in a 2 x2 factorial ANOVA? (Points : 2)

Question 35. 35. Measures which occur at the same time are known as what type of measures?
(Points : 2)

Question 36. 36. What is another term for a positive correlation? (Points : 2)

Question 37. 37. Which of the following is an example of a null hypothesis for testing a correlation coefficient? (Points : 2)

Question 38. 38. The level of risk or Type I error typically set for testing the level of significance of a correlation coefficient is which of the following? (Points : 2)

Question 39. 39. Which of the following types of reliability correlates scores on a single measure on two different occasions? (Points : 2)

Question 40. 40. If the correlation between two variables is .496, how much of the variance has not been accounted for? (Points : 2)

Question 41. 41. If a research hypothesis does not predict the direction of a relationship, the test is __________. (Points : 2)

Question 42. 42. If a simple Pearson correlation value = .512, what percentage of variance is accounted for? (Points : 2)

Question 43. 43. If a simple Pearson correlation value = .362, what percentage of variance is unaccounted for? (Points : 2)

Question 44. 44. If a simple Pearson correlation value = .75, what percentage of variance is unaccounted for? (Points : 2)

Question 45. 45. What statistical technique is used to make predictions of future outcomes based on present data? (Points : 2)

Question 46. 46. Which of the following symbols is associated with the predicted score in the regression equation? (Points : 2)

Question 47. 47. Which of the following symbols is associated with the slope in the regression equation? (Points : 2)

Question 48. 48. Which of the following symbols is associated with the y-intercept in the regression equation? (Points : 2)

Question 49. 49. How would you represent the predicted score of Y based on a known value of X?
(Points : 2)

Question 50. 50. Which of the following determines the direction of the regression line? (Points : 2)

Question 51. 51. What must be used to examine an outcome that is predicted from two independent variables? (Points : 2)

Question 52. 52. In the multiple regression formula, what does X2 represent? (Points : 2)

Question 53. 53. If the correlation between X and Y is equal to -1.0, what do we know about the prediction of Y by X? (Points : 2)

Question 54. 54. If you are trying to predict Y scores from X scores, X is referred to as the __________. (Points : 2)

Question 55. 55. The general formula for a regression line is ________. (Points : 2)

Question 56. 56. Which of the following is the symbol for summation? (Points : 2)

Question 57. 57. Which of the following is the most commonly used nonparametric test? (Points : 2)

Question 58. 58. A one-sample chi-square is also known as ________. (Points : 2)

Question 59. 59. A two-sample chi-square is also known as ________. (Points : 2)

Question 60. 60. If you have 100 respondents identifying their gender, what would the expected frequency be for each category? (Points : 2)

Question 61. 61. Which of the following nonparametric tests is used to compare two independent samples? (Points : 2)

Question 62. 62. Which of the following nonparametric tests is used to compare the magnitude and direction of differences between two groups? (Points : 2)

Question 63. 63. Which of the following is the correct formula for calculating the degrees of freedom for a one-sample chi-sqaure? (Points : 2)

Question 64. 64. If there are three categories for which you are calculating a one-sample chi-square, what are the degrees of freedom? (Points : 2)

Question 65. 65. Nonparametric statistics is known as _______________. (Points : 2)

Question 66. 66. Which of the following advanced procedures is characterized by the use of more than one dependent variable? (Points : 2)

Question 67. 67. Which of the following procedures can be utilized to examine within groups change over time? (Points : 2)

Question 68. 68. If you want to equalize initial differences between two groups before examining group difference, what procedure would you use? (Points : 2)

Question 69. 69. Which of the following is sometimes referred to as an "umbrella" term for techniques such as Regression, Path Analysis, and Factor Analysis? (Points : 2)

Question 70. 70. If a researcher wants to examine the direction of a relationship between two variables such that he/she posits that one variable causes the other, what type of statistical procedure would be used? (Points : 2)

Question 71. 71. Of the following, which procedure is sometimes referred to as a "data reduction" method as it allows a researcher to explore how items on a particular measure cluster together? (Points : 2)

Question 72. 72. When is MANOVA most appropriate to use? (Points : 2)

Question 73. 73. In what type of ANOVA, is there one factor on which participants are tested more than once? (Points : 2)

Question 74. 74. Which of the following statistical techniques is used when values of more than one variable are used to predict the value of another variable? (Points : 2)

Question 75. 75. What is Cronbach's alpha used to assess? (Points : 2)