Histograms

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data by using bars to show the number of data points that fall within specified ranges (bins).

Front

How does a histogram differ from a bar graph?

Back

A histogram displays numerical data and shows the distribution of data points across intervals, while a bar graph displays categorical data and compares different categories.

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 data.

Front

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

Back

The height of a bar in a histogram represents the frequency (number of occurrences) of data points within that interval.

Front

If a histogram shows that 44 cities have temperatures between 70 and 99 degrees, what does this indicate?

Back

This indicates that there are 44 data points (cities) that fall within the temperature range of 70 to 99 degrees.

Front

What is the significance of the x-axis in a histogram?

Back

The x-axis represents the intervals (bins) of the numerical data, showing the ranges of values being analyzed.

Front

What is the significance of the y-axis in a histogram?

Back

The y-axis represents the frequency of data points within each interval, indicating how many data points fall into each range.

Front

How can you determine the mode from a histogram?

Back

The mode can be determined by identifying the interval with the highest bar (frequency) in the histogram.

Front

What does it mean if a histogram is skewed to the right?

Back

A right-skewed histogram indicates that most data points are concentrated on the left side, with a few higher values extending to the right.

Front

What does it mean if a histogram is symmetric?

Back

A symmetric histogram indicates that the data is evenly distributed around the center, with similar frequencies on both sides.