Statistique Et Méthodologie De La Recherche Test

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

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

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

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

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

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

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

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

A scatterplot is a ?

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

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

In descriptive statistics our main objective is to:

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

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

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

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:

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

Scatter diagram is considered for measuring :

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

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

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

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

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

Which of the following statements is false?

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

The coefficient of determination (r2) is

All data points falling along a straight line is called:

Quantitative data refers to:

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

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

A discrete variable is:

The most commonly used formula to describe linear relationship is?

A perfect positive correlation is signified by:

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

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

The correlation coefficient is used to determine:

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

The two forms of t-test are:

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

In correlation both variables are always?

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

Which of the following statements is true regarding a sample?

Inferential statistics enable you to (Except one):

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

To compare three independent means we use:

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

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

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

Relationship between correlation coefficient and coefficient of determination is that?

R2 is used in regression analysis to:

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

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

The term regression was used by:

Inferential statistics enable you to :

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

Correlation analysis is used to:

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: