Central Tendency Test

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What is Central Tendency?

Back

Central tendency is a statistical measure that identifies a single value as representative of an entire distribution. It includes measures like mean, median, and mode.

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What is the Mean?

Back

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

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What is the Median?

Back

The median is the middle value in a data set when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

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What is the Mode?

Back

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

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What is a Box and Whisker Plot?

Back

A box and whisker plot is a graphical representation of a data set that shows its minimum, first quartile (Q1), median, third quartile (Q3), and maximum.

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What is the Upper Quartile (Q3)?

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The upper quartile (Q3) is the median of the upper half of a data set, representing the 75th percentile.

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What is the Lower Quartile (Q1)?

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The lower quartile (Q1) is the median of the lower half of a data set, representing the 25th percentile.

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What does the term 'Upper Extreme' refer to in a box plot?

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The upper extreme is the highest value in the data set, represented by the rightmost point in a box and whisker plot.

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How do you find the Median of a data set?

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To find the median, arrange the data in ascending order and locate the middle value. If the number of values is even, average the two middle values.

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What is the significance of the Interquartile Range (IQR)?

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The interquartile range (IQR) measures the spread of the middle 50% of the data, calculated as Q3 - Q1.