Statistique Et Mรฉthodologie De La Recherche Test

0%
0 votes, 0 avg
335

You will have 60 minutes to complete all the questions. After the timer reaches 60 minutes, the exam will end and be saved automatically. Good luck! *Fingers crossed*

The timer has been reached. The exam has now been terminated and saved.


Statistique Et Mรฉthodologie De La Recherche Test

 

1 / 60

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

2 / 60

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

3 / 60

The most commonly used formula to describe linear relationship is?

4 / 60

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

5 / 60

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

6 / 60

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

7 / 60

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

8 / 60

Which of the following statements is true regarding a sample?

9 / 60

Scatter diagram helps us to :

10 / 60

A scatterplot is a ?

11 / 60

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

12 / 60

Inferential statistics enable you to :

13 / 60

The two forms of t-test are:

14 / 60

A Type I error occurs when the null hypothesis is:

15 / 60

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

16 / 60

In scatter diagram, if most of the points lie in the first and third quadrants, then coefficient of correlation is:

17 / 60

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

18 / 60

In simple linear regression model Y = ฮฑ + ฮฒX + ฮต where ฮฑ and ฮฒ are called

19 / 60

The null hypothesis states the means are:

20 / 60

Correlation analysis is used to:

21 / 60

The sum of the difference between the actual values of Y and its values obtained from the fitted regression line is always:

22 / 60

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

23 / 60

Inferential statistics are useful for:

24 / 60

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

25 / 60

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

26 / 60

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

27 / 60

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

28 / 60

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

29 / 60

If the two series move in reverse directions and the variations in their values are always proportionate, it is said to be:

30 / 60

Correlation analysis aims at :

31 / 60

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

32 / 60

A discrete variable is:

33 / 60

The null hypothesis states the means are:

34 / 60

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

35 / 60

In descriptive statistics our main objective is to:

36 / 60

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

37 / 60

If the points on the scatter diagram indicate that as one variable increases the other variable tends to decrease the value of r will be:

38 / 60

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

39 / 60

The coefficient of determination (r2) is

40 / 60

In correlation both variables are always?

41 / 60

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

42 / 60

The coefficient of determination is the?

43 / 60

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

44 / 60

When regression line passes through the origin, then:

45 / 60

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

46 / 60

Internal โ€œvalidity” refers to:

47 / 60

If both variables X and Y increase or decrease simultaneously, then the coefficient of correlation will be:

48 / 60

Relationship between correlation coefficient and coefficient of determination is that?

49 / 60

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

50 / 60

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

51 / 60

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

52 / 60

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

53 / 60

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 โ€˜rโ€™:

54 / 60

If the points on the scatter diagram show no tendency either to increase together or decrease together the value of r will be close to:

55 / 60

A perfect positive correlation is signified by:

56 / 60

A measure of the strength of the linear relationship that exists between two variables is called:

57 / 60

Which of the following statements is false?

58 / 60

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

59 / 60

If one item is fixed and unchangeable and the other item varies, the correlation coefficient will be:

60 / 60

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

Your score is

The average score is 86%

0%

Any comments?