Statistique Et Méthodologie De La Recherche Test

The correlation coefficient is used to determine:

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

R2 is used in regression analysis to:

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

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

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

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

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

Inferential statistics enable you to :

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

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

A Type I error occurs when the null hypothesis is:

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

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

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

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

An r value of 0.80 indicates:

The regression equation always passes through:

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

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

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

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

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

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

The most commonly used formula to describe linear relationship is?

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

The coefficient of determination (r2) is

Internal “validity” refers to:

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

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

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

The dependent variable is also called except one:

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:

Scatter diagram helps us to :

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

All data points falling along a straight line is called:

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:

Scatter diagram is considered for measuring :

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

Which of the following statements is false?

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’:

Inferential statistics are useful for:

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

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

Correlation analysis aims at :

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

The purpose of simple linear regression analysis is to:

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

Quantitative data refers to:

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

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

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

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

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

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

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