Central Tendency

Front

What is central tendency?

Back

Central tendency is a statistical measure that identifies a single value as representative of an entire dataset, commonly measured by mean, median, and mode.

Front

How do you calculate the mean of a dataset?

Back

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

Front

What is the median in a dataset?

Back

The median is the middle value when the data is arranged in ascending order. If there is an even number of observations, the median is the average of the two middle values.

Front

What is the mode of a dataset?

Back

The mode is the value that appears most frequently in a dataset.

Front

What is the range of a dataset?

Back

The range is the difference between the largest and smallest values in a dataset.

Front

What does Q1 represent in a box-and-whisker plot?

Back

Q1, or the first quartile, represents the median of the lower half of the dataset, indicating that 25% of the data falls below this value.

Front

What does Q3 represent in a box-and-whisker plot?

Back

Q3, or the third quartile, represents the median of the upper half of the dataset, indicating that 75% of the data falls below this value.

Front

What percentage of data falls between Q1 and Q3 in a box-and-whisker plot?

Back

50% of the data falls between Q1 and Q3.

Front

How do you find the interquartile range (IQR)?

Back

The interquartile range (IQR) is calculated by subtracting Q1 from Q3 (IQR = Q3 - Q1).

Front

What is a box-and-whisker plot?

Back

A box-and-whisker plot is a graphical representation of a dataset that displays its minimum, first quartile, median, third quartile, and maximum.