Statistique Et Méthodologie De La Recherche Test

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

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

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

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

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

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

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

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

The signs of regression coefficients and correlation coefficient are always:

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

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

All data points falling along a straight line is called:

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

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

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

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

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

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

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

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

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:

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

A t-test is used to compare:

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

Computers are essential for quantitative data analysis because?

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

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

The correlation coefficient is used to determine:

A perfect positive correlation is signified by:

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:

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

The null hypothesis states the means are:

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

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

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

Two variables have a positive association when?

The null hypothesis states the means are:

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

The coefficient of determination is the?

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

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

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

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

A discrete variable is:

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

Correlation analysis is used to:

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, a is called:

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

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

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

Which of the following statements is true regarding a sample?

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

Relationship between correlation coefficient and coefficient of determination is that?

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