Measures of Central Tendency in Statistics

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What is the name of the average that considers the relative importance of each observation?

Simple Average

Moving Average

Mode Average

Weighted Average (correct)

A dataset with two distinct peaks is an example of a _______ distribution.

Normal

Multimodal

Unimodal

Bimodal (correct)

What is the purpose of a moving average?

To smooth out fluctuations in a time series (correct)

To compare performance across different time frames

To track changes over time

To find the overall average of a dataset

What is the formula to calculate the index number?

Index = (Current Period Value / Base Period Value) × 100 Signup and view all the answers

Which type of average is used to find the average score of a class on a test?

Simple Average Signup and view all the answers

What is the term for the number of peaks in a dataset?

Modality Signup and view all the answers

What is the most widely used measure of central tendency in statistics?

Mean Signup and view all the answers

What is the middle value in a list of numbers when it is sorted in increasing order?

Median Signup and view all the answers

What is the most frequent value in a dataset?

Mode Signup and view all the answers

What is the symbol for the population mean?

μ Signup and view all the answers

What type of sampling involves selecting a subset of the population based on certain characteristics?

Stratified sampling Signup and view all the answers

What is the average of a dataset that is calculated by giving more weight to certain values?

Weighted average Signup and view all the answers

What type of skewness is present when the mean is greater than the median?

Right or positive skewness Signup and view all the answers

What is the primary difference between the equation for sample variance and the equation for population variance?

The sample equation uses N-1, while the population equation uses N Signup and view all the answers

According to the Empirical Rule, what percentage of data falls within two standard deviations from the mean?

Roughly 95% Signup and view all the answers

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

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

What does a low variance indicate about the data points in a dataset?

They are close to the mean and to each other Signup and view all the answers

What type of skewness is present when the mean is less than the median?

Left or negative skewness Signup and view all the answers

Measures of Central Tendency in Statistics

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Questions and Answers

What is the name of the average that considers the relative importance of each observation?

A dataset with two distinct peaks is an example of a _______ distribution.

What is the purpose of a moving average?

What is the formula to calculate the index number?

Which type of average is used to find the average score of a class on a test?

What is the term for the number of peaks in a dataset?

What is the most widely used measure of central tendency in statistics?

What is the middle value in a list of numbers when it is sorted in increasing order?

What is the most frequent value in a dataset?

What is the symbol for the population mean?

What type of sampling involves selecting a subset of the population based on certain characteristics?

What is the average of a dataset that is calculated by giving more weight to certain values?

What type of skewness is present when the mean is greater than the median?

What is the primary difference between the equation for sample variance and the equation for population variance?

According to the Empirical Rule, what percentage of data falls within two standard deviations from the mean?

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

What does a low variance indicate about the data points in a dataset?

What type of skewness is present when the mean is less than the median?

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