Measures of Central Tendency Spr 23

Front

What are measures of central tendency?

Back

Measures of central tendency are statistical measures that describe the center or typical value of a dataset. The most common measures are mean, median, and mode.

Front

What is the mean?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

What is the median?

Back

The median is the middle value in a dataset when the numbers are arranged in order. If there are two middle numbers, the median is the average of those two numbers.

Front

What is the mode?

Back

The mode is the value that appears most frequently in a dataset. A dataset may have one mode, more than one mode, or no mode at all.

Front

How do you calculate the mean of a dataset?

Back

To calculate the mean, sum all the values in the dataset and divide by the total number of values.

Front

Is the following statement true or false? 'The mode is always one of the numbers in the dataset.'

Back

True. The mode is defined as the number that appears most frequently in the dataset.

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What is a non-statistical question?

Back

A non-statistical question is one that does not involve variability or data collection, such as 'How many cars are in the parking lot?'

Front

When is it necessary to arrange data items in order?

Back

It is necessary to arrange data items in order when calculating the median.

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How do you find the median of an odd-numbered dataset?

Back

To find the median of an odd-numbered dataset, arrange the numbers in order and select the middle number.

Front

How do you find the median of an even-numbered dataset?

Back

To find the median of an even-numbered dataset, arrange the numbers in order, identify the two middle numbers, and calculate their average.