1) If the coefficient of determination is equal to 1, then the correlation coefficient:

2) The signs of regression coefficients and correlation coefficient are always:

3) A statistical technique that develops an equation that relates a dependent variable to one or
more independent variables is called:

4) The strength (degree) of the correlation between a set of independent variables X and a dependent variable Y is measured by

5) Inferential statistics are useful for:

6) 51. What is the slope of the line y = -3.4x – 2.5?

7) The range of regression coefficient is:

8) If the correlation coefficient is 0.8, the percentage of variation in the response variable explained
by the variation in the explanatory variable is:

9) If all the plotted points in a scatter diagram lie on a single line, then the correlation is :

10) Scatter diagram is considered for measuring :

11) The coefficient of determination, r2, indicates:

12) A t-test is used to compare:

13) The measure of how well the regression line fits the data is the:

14) A scatter plot?

15) If the Pearson Correlation Coefficient shows zero value, it means that:

16) In descriptive statistics our main objective is to:

17) In simple linear regression model Y = α + βX + ε where α and β are called

18) Which of these is not one of the four main reasons for missing data?

19) The arithmetic mean of the two regression coefficients is greater than or equal to:

20) In the regression equation Y = a + bX, where a and b are called:

21) Which of the following statements is true regarding a sample?

22) 1. The method of least squares dictates that we choose a regression line where the sum of the
square of deviations of the points from the lie is:

23) To compare three independent means we use:

24) An r value of 0.80 indicates:

25) When there is no linear correlation between two variables, what will the value of r be?

26) In the regression equation Y = a+bX, the Y is called

27) A procedure used to select a sample of n objects from a population in such a way that each
member of the population is chosen strictly by chance, each member of the population is equally
likely to be chosen, and every possible sample of a given size, n, has the same chance of selection
is known as:

28) In correlation both variables are always?

29) In regression analysis, the variable that is being predicted is

30) Relationship between correlation coefficient and coefficient of determination is that?

31) The mean of a sampling distribution of a sample statistic is called :

32) 31. The value of the coefficient of correlation r lies between:

34) The regression equation always passes through:

35) When the two regression lines are parallel to each other, then their slopes are:

36) What does it mean when you calculate a 95% confidence interval?

37) A qualitative variable:

38) When the p-value is less than 0.05 we can conclude that:

39) The coefficient of correlation

40) If Y = 2 – 0.2X, then the value of Y intercept is equal to:

41) The value we would predict for the dependent variable when the independent variables are all
equal to zero is called:

42) In the regression equation y = bo + b1x1, b1 is the

43) The dependent variable is also called except one:

44) The null hypothesis states the means are:

45) The total variation explained by a regression model is given by:

46) In the regression equation Y = a +bX, a is called:

48) If you have 20 pairs of subjects what would be the degrees of freedom for a test of correlation
between the groups of scores?

49) The graph showing the paired points of (Xi, Yi) is called:

50) The value of the coefficient of determination (r2) ranges between

51) The purpose of simple linear regression analysis is to:

52) If all the values fall on the same straight line and the line has a positive slope then what will be
the value of the correlation coefficient ‘r’:

53) If the slope of the regression equation y = bo + b1x is positive, then

54) Which of the following statements regarding a researcher’s use of inferential statistics is
true?

55) A Type I error occurs when the null hypothesis is:

56) Correlation analysis aims at :

57) The coefficient of determination (r2) is

58) Because of the possibility of error in sampling from populations, researchers use:

59) If a researcher conducts a study in which the reading ability of a class of 20 second graders is
tested at the beginning and at the end of the year, the appropriate statistical procedure to
analyze the results would be:

60) R2 is used in regression analysis to:

61) Quantitative data refers to:

62) An example of an experimental study is a(n):

63) The difference between regression analysis and correlation analysis is (except one):

64) Scatter diagram helps us to :

66) A scatterplot is a ?

67) The coefficient of determination (sometimes known as the regression coefficient) enables you to:

68) Which of the following are examples of continuous variables?

69) The null hypothesis states the means are:

70) if the correlation coefficient r = 0.5 then the coefficient of determination is?

71) To investigate the association between two categorical variables we use:

72) Inferential statistics enable you to :

73) Two variables have a positive association when?

74) To compare two means we use:

75) If two variables have a correlation coefficient of .30, what percentage of one variable is
accounted for by the other variable?

76) Inferential statistics enable you to (Except one):

77) The best fitting trend is one for which the sum of squares of error is?

78) If the coefficient of determination is 0.81, the correlation coefficient:

79) When correlation coefficient is 1, all the points in a scatter diagram would lie?

80) If a study is “reliable”, this means that:

81) The percent of total variation of the dependent variable Y explained by the set of independent variables X is measured by

82) The straight line graph of the linear equation Y = a + bX, slope will be downward If:

83) Which of the following statements is true?

84) In the regression equation y = bo + bx, bo is the

86) The mean, median, mode and standard deviation are examples of:

87) In regression analysis, the variable that is being predicted is the:

88) Which part of written report that can answer the research question?

90) In simple linear regression, the numbers of unknown constants are:

91) All data points falling along a straight line is called:

92) If two variables, x and y, have a very strong linear relationship, then:

93) The two forms of t-test are:

94) If the correlation coefficient is a positive value, then the slope of the regression line:

96) Correlation and regression are concerned with ?

98) The most commonly used formula to describe linear relationship is?

101) Let the coefficient of determination computed to be 0.39 in a problem involving one independent variable and one dependent variable. This result means that

102) When the p-value is greater than 0.05 we can conclude that:

103) If there is a very strong correlation between two variables then the correlation coefficient must
be:

105) Correlation analysis is used to:

106) Which of the following requirements for a scientific report writing may depend on your
institution (EXCEPT ONE)?

107) If regression line of Y= 5, then value of regression coefficient of Y on X is:

108) The slope of the regression line of Y on X is also called the:

109) A perfect positive correlation is signified by:

110) In regression analysis, if the independent variable is measured in kilograms, the dependent
variable:

111) The correlation coefficient is used to determine:

112) The degree of linear association between two metric scaled variables is measured by:

113) The predicted rate of response of the dependent variable to changes in the independent variable
is called:

114) Internal “validity” refers to:

115) Method is used to infer that the results from a sample are reflective of the true population
scores. ?

116) Positive regression coefficient indicates that the movement of the variables are in:

117) In regression, the equation that describes how the response variable (y) is related to the
explanatory variable (x) is:

118) Inferential statistics is a process that involves all of the following EXCEPT:

119) A coefficient of correlation is computed to be -0.95 means that

120) 2. A relationship where the flow of the data points is best represented by a curve is called:

121) Which of the following statements is false?

122) The step in the data analysis process is (EXCEPT ONE):

123) In regression analysis, the variable that is doing the predicting or explaining is

124) If the value of any regression coefficient is zero, then two variables are:

125) If the value of regression coefficient is zero, then the two variable are called:

126) My estimated regression line is Y = 17 + 4X. The intercept is equal to:

127) Which Statistical software come with appropriate table, graph, and/or chart-building
features to easily convert tabular data into a variety of formats.?

128) The term regression was used by:

129) A discrete variable is:

130) Computers are essential for quantitative data analysis because?

131) Negative regression coefficient indicates that the movement of the variables are in:

132) Inferential statistics enable you to :

133) If the plotted points in a scatter diagram are evenly distributed, then the correlation is :

134) In simple regression equation, the numbers of variables involved are:

135) The correlation coefficient, r, can take on any value within what range?

136) Bivariate Data are the data collected for :

137) A process by which we estimate the value of dependent variable on the basis of one or more
independent variables is called:

138) The coefficient of determination is the?

139) The straight line graph of the linear equation Y = a + bX, slope is horizontal if:

140) In the regression equation Y = a + bX, b is called:

142) An alternative to statistical techniques for analysis of data to find patterns and trends is?

143) If the plotted points in a scatter diagram lie from upper left to lower right, then the correlation
is :