2) Correlation analysis aims at :

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

4) The term regression was used by:

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

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

7) The coefficient of determination is the?

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

10) The correlation coefficient is used to determine:

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

12) 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

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

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

16) A t-test is used to compare:

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

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

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

20) Correlation and regression are concerned with ?

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

23) The dependent variable is also called except one:

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

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

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

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

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

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

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

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

32) A discrete variable is:

33) In correlation both variables are always?

34) Computers are essential for quantitative data analysis because?

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

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

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

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

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

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

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

42) 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’:

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

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

45) Correlation analysis is used to:

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

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

48) 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:

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

50) Which of the following statements is false?

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

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

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

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

55) The regression equation always passes through:

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

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

58) Bivariate Data are the data collected for :

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:

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

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

63) Two variables have a positive association when?

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

65) An r value of 0.80 indicates:

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

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

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

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

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

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

72) To compare two means we use:

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

74) The two forms of t-test are:

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

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

77) The range of regression coefficient is:

78) The coefficient of determination, r2, indicates:

79) A scatterplot is a ?

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

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

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

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

85) The coefficient of determination (r2) is

86) The null hypothesis states the means are:

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

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

89) A qualitative variable:

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

91) To compare three independent means we use:

92) In descriptive statistics our main objective is to:

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

95) A scatter plot?

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

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

98) Quantitative data refers to:

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

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

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

102) Inferential statistics enable you to :

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

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

105) A perfect positive correlation is signified by:

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

107) 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:

108) The coefficient of correlation

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

110) R2 is used in regression analysis to:

111) Inferential statistics are useful for:

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

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

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

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

117) Scatter diagram is considered for measuring :

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

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

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

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

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

124) Scatter diagram helps us to :

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

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

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

128) Internal “validity” refers to:

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

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

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

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

134) The null hypothesis states the means are:

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

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

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

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

139) Inferential statistics enable you to :

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

142) Which of the following statements is true?

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