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Using Statistical Techniques in Data Analysis

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Using Statistical Techniques in Data Analysis

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Questions and Answers

What does statistics pertain to?

Interpreting variable or fluctuating numerical data

Designing the experimental method

Performing arithmetic procedures like addition, division, subtraction, and multiplication

Collecting and analyzing numerical data (correct)

Which of the following is NOT involved in statistics?

Organizing data in relation to the experimental method chosen

Planning the experimental method

Performing arithmetic procedures like addition, division, subtraction, and multiplication (correct)

Interpreting variable or fluctuating numerical data

What does a correlative study using Pearson r aim to determine?

The strength and direction of the linear relationship between two variables (correct)

The variability of one variable based on the other

The causation between two variables

The presence of outliers in the data

What is the main demand of statistics?

Organizing data in relation to the design of the experimental method chosen Signup and view all the answers

How are statistical methods related to numerical data?

Ways of gathering, analyzing, and interpreting variable or fluctuating numerical data Signup and view all the answers

What type of relationship can be measured by various correlation methods?

The degree of association between different characteristics Signup and view all the answers

What is the relationship between two variables in a curvilinear correlation?

The change in one variable is not at a fixed rate Signup and view all the answers

What does a correlation coefficient of zero represent?

No relationship between the two variables Signup and view all the answers

Which measure was first derived by a British statistician and measures the linear relationship between two variables?

Pearson Product-Moment Correlation Coefficient Signup and view all the answers

When is it important to construct a scatter diagram in relation to the Pearson r?

Before calculating the correlation coefficient Signup and view all the answers

What does a correlation coefficient of -1 indicate?

A perfect negative linear relationship Signup and view all the answers

What type of correlation involves more than two variables and has a relationship similar to curvilinear correlation?

Multiple Correlation Signup and view all the answers

In which type of correlation do you measure the relationship between a dependent variable and two or more independent variables?

Multiple Correlation Signup and view all the answers

What does a correlation coefficient of +1 indicate?

A perfect positive linear relationship Signup and view all the answers

What does simple correlation measure?

The relationship between an independent variable and a dependent variable Signup and view all the answers

What type of correlation involves measuring the relative relationship between the dependent variable and a particular independent variable, without considering the effect of other independent variables under study?

Partial Correlation Signup and view all the answers