Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified intervals (bins).

Front

What is the purpose of using intervals (bins) in a histogram?

Back

Intervals (bins) group data points into ranges, allowing for a clearer visualization of the distribution and frequency of the data.

Front

How do you determine the range of a data set?

Back

The range is calculated by subtracting the smallest value from the largest value in the data set.

Front

What does the height of a bar in a histogram represent?

Back

The height of a bar in a histogram represents the frequency (count) of data points that fall within the corresponding interval.

Front

What is the difference between a histogram and a bar graph?

Back

A histogram displays continuous data and uses adjacent bars, while a bar graph displays categorical data with spaces between bars.

Front

What is a boxplot?

Back

A boxplot is a standardized way of displaying the distribution of data based on a five-number summary: minimum, first quartile, median, third quartile, and maximum.

Front

What is the median in a data set?

Back

The median is the middle value when the data points are arranged in ascending order; if there is an even number of observations, it is the average of the two middle values.

Front

What is the mode of a data set?

Back

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

Front

What is the significance of outliers in data analysis?

Back

Outliers are data points that differ significantly from other observations; they can skew results and affect the interpretation of the data.

Front

How can you identify the mode from a histogram?

Back

The mode can be identified as the interval with the highest bar (frequency) in the histogram.