Measures of Spread: Statistical Tools

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What is the purpose of descriptive statistics?

To generalize the findings from a sample to a population

To describe and summarize the parameters of a population or the statistics of a sample (correct)

To test hypotheses about a population

To gather data from a sample

What is the term for all of the items or individuals that a researcher wants to study?

Population (correct)

Parameter

Statistic

Sample

What is the calculation to find the variance?

Sum of the differences divided by the number of data points

Mean of the squared differences

Sum of squared differences divided by the number of data points (correct)

Squared difference of the mean

What is the relationship between the variance and the standard deviation?

The standard deviation is the square root of the variance Signup and view all the answers

What is the purpose of gathering data from a sample?

To make inferences about the population Signup and view all the answers

What is the result of subtracting the mean from each value in a data set and then squaring the differences?

The squared differences Signup and view all the answers

What is the primary goal of exploratory research?

To study variables pertinent to a specific situation Signup and view all the answers

What type of research involves the use of inferential statistics to test a hypothesis?

Quantitative research Signup and view all the answers

What is the primary difference between quantitative and qualitative data?

The type of data collected Signup and view all the answers

What is the purpose of measures of location in statistical analysis?

To determine the position of values in the frequency distribution Signup and view all the answers

Which type of research involves studying the effects of variables on each other?

Experimental research Signup and view all the answers

What is the characteristic of non-quantitative research?

It involves the use of descriptive data Signup and view all the answers

What is the primary purpose of a frequency distribution?

To display the frequency of various outcomes in a sample Signup and view all the answers

What is the term for measures that tell you the position of values in a frequency distribution?

Measures of location Signup and view all the answers

What is a characteristic of the intervals in a frequency distribution?

They must be mutually exclusive and exhaustive Signup and view all the answers

Measures of Spread: Statistical Tools

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Questions and Answers

What is the purpose of descriptive statistics?

What is the term for all of the items or individuals that a researcher wants to study?

What is the calculation to find the variance?

What is the relationship between the variance and the standard deviation?

What is the purpose of gathering data from a sample?

What is the result of subtracting the mean from each value in a data set and then squaring the differences?

What is the primary goal of exploratory research?

What type of research involves the use of inferential statistics to test a hypothesis?

What is the primary difference between quantitative and qualitative data?

What is the purpose of measures of location in statistical analysis?

Which type of research involves studying the effects of variables on each other?

What is the characteristic of non-quantitative research?

What is the primary purpose of a frequency distribution?

What is the term for measures that tell you the position of values in a frequency distribution?

What is a characteristic of the intervals in a frequency distribution?

What do measures of central tendency provide?

What is a common association of frequency distributions?

What is a common use of frequency distributions in statistical analysis?

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