dot plots, histograms and Box plot

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots plotted on a number line, representing the frequency of data points.

Front

How do you interpret a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, where the data is divided into bins, and the height of each bar represents the frequency of data points in that bin.

Front

What is a box plot?

Back

A box plot, or box-and-whisker plot, 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 does the median represent in a data set?

Back

The median is the middle value of a data set when it is ordered from least to greatest, dividing the data into two equal halves.

Front

What are quartiles in statistics?

Back

Quartiles are values that divide a data set into four equal parts, with the first quartile (Q1) being the median of the lower half, the second quartile (Q2) being the median, and the third quartile (Q3) being the median of the upper half.

Front

How do you calculate the range of a data set?

Back

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

Front

What does the first quartile (Q1) represent?

Back

The first quartile (Q1) represents the value below which 25% of the data falls.

Front

What does the third quartile (Q3) represent?

Back

The third quartile (Q3) represents the value below which 75% of the data falls.

Front

What is the purpose of a box-and-whisker plot?

Back

A box-and-whisker plot is used to visually summarize the distribution of a data set, highlighting its central tendency, variability, and potential outliers.

Front

What is an outlier in a data set?

Back

An outlier is a data point that is significantly different from the other observations in the data set, often lying outside 1.5 times the interquartile range (IQR) from the quartiles.