Flashcard 1 - Averages and Measure of Spread

Front

What is the definition of 'Mode' in statistics?

Back

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

Front

How do you calculate the 'Median' of a data set?

Back

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

Front

What is 'Range' in statistics?

Back

The range is the difference between the highest and lowest values in a data set.

Front

What is the 'Mean' of a data set?

Back

The mean is calculated by adding all the values together and dividing by the number of values.

Front

How do you find the 'Lower Quartile' (Q1) of a data set?

Back

The lower quartile is the median of the lower half of the data set, excluding the median if the number of observations is odd.

Front

What does it mean if a data set is 'consistent'?

Back

A consistent data set has values that are close to each other, resulting in a smaller range.

Front

What is the significance of the 'Upper Quartile' (Q3)?

Back

The upper quartile is the median of the upper half of the data set and indicates the 75th percentile.

Front

How do you interpret a 'Box Plot'?

Back

A box plot visually represents the distribution of a data set, showing the median, quartiles, and potential outliers.

Front

What is the purpose of calculating 'Standard Deviation'?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

Front

What is a 'Frequency Table'?

Back

A frequency table displays the number of occurrences of each value in a data set.