Lesson 3 Bar & Histogram

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 ranges (bins).

Front

What does it mean if a histogram is skewed right?

Back

A right-skewed histogram has a longer tail on the right side, indicating that most data points are concentrated on the left with fewer high values.

Front

What does it mean if a histogram is skewed left?

Back

A left-skewed histogram has a longer tail on the left side, indicating that most data points are concentrated on the right with fewer low values.

Front

What is a symmetrical (normal) distribution in a histogram?

Back

A symmetrical (normal) distribution in a histogram shows that data points are evenly distributed around the mean, forming a bell-shaped curve.

Front

What type of data is represented in a histogram?

Back

Histograms represent quantitative data, which consists of numerical values that can be measured.

Front

What is the purpose of using bins in a histogram?

Back

Bins group data points into ranges, allowing for a clearer visualization of the frequency distribution of the data.

Front

How do you determine the total number of data points from a histogram?

Back

To determine the total number of data points, sum the heights of all the bars in the histogram.

Front

What is the difference between quantitative and categorical data?

Back

Quantitative data consists of numerical values that can be measured, while categorical data represents categories or groups.

Front

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

Back

The height of a bar in a histogram represents the frequency or count of data points within that bin.

Front

How can you identify outliers in a histogram?

Back

Outliers can be identified in a histogram as bars that are significantly taller or shorter than the others, indicating data points that fall far from the rest.