Histogram Flashcard

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, where the data is divided into intervals (bins) and the frequency of data points within each interval is represented by the height of the bars.

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 that fall within the corresponding interval (bin).

Front

How do you determine the intervals (bins) for a histogram?

Back

Intervals (bins) for a histogram are determined by dividing the range of data into equal segments. The choice of bin width can affect the shape of the histogram.

Front

What is the purpose of using a stem-and-leaf plot before creating a histogram?

Back

A stem-and-leaf plot helps organize and visualize the data, making it easier to determine the frequency of scores and to create a histogram.

Front

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

Back

If a histogram is skewed to the right, it means that the majority of the data points are concentrated on the left side, with a tail extending to the right, indicating that there are a few higher values.

Front

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

Back

If a histogram is skewed to the left, it means that the majority of the data points are concentrated on the right side, with a tail extending to the left, indicating that there are a few lower values.

Front

What is an approximately normal distribution?

Back

An approximately normal distribution is a symmetric, bell-shaped histogram where most of the data points cluster around the mean, with fewer points as you move away from the mean.

Front

How can you identify the mode of a dataset using a histogram?

Back

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

Front

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

Back

A histogram displays the frequency of numerical data divided into intervals, while a bar graph represents categorical data with separate bars for each category.

Front

What is the significance of the total area of a histogram?

Back

The total area of a histogram represents the total number of data points in the dataset, assuming the height of each bar is proportional to the frequency.