Statistique Et Méthodologie De La Recherche Test

Scatter diagram is considered for measuring :

A t-test is used to compare:

Inferential statistics enable you to :

An r value of 0.80 indicates:

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:

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

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

Which of the following statements is true?

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

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

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

A perfect positive correlation is signified by:

To compare two means we use:

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

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

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’:

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

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

The null hypothesis states the means are:

In descriptive statistics our main objective is to:

The coefficient of determination, r2, indicates:

In regression analysis, the variable that is being predicted is

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

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

Computers are essential for quantitative data analysis because?

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

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

The correlation coefficient is used to determine:

Correlation analysis aims at :

The most commonly used formula to describe linear relationship is?

Inferential statistics enable you to :

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

Internal “validity” refers to:

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

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

Correlation analysis is used to:

Inferential statistics are useful for:

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

Which of the following are examples of continuous variables?

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

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

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

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

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

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:

Bivariate Data are the data collected for :

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

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

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:

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

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

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

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

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

Which of the following statements is false?

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

The two forms of t-test are: