Statistics: Dot Plots, Histograms & Box and Whisker Plot

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots plotted above a number line, where each dot represents a data point. It is used to visualize the distribution of a small dataset.

Front

How do you calculate the range of a dataset?

Back

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

Front

What is a histogram?

Back

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

Front

What is a box and whisker plot?

Back

A box and whisker plot is a standardized way of displaying the distribution of data based on a five-number summary: minimum, first quartile (Q1), median, third quartile (Q3), and maximum.

Front

What does IQR stand for and how is it calculated?

Back

IQR stands for Interquartile Range, which is calculated as Q3 - Q1. It measures the spread of the middle 50% of the data.

Front

What is the purpose of a line plot?

Back

A line plot is used to display data along a number line, showing the frequency of each value in a dataset. It helps in visualizing the distribution and identifying trends.

Front

How can you determine the frequency of a specific score in a dataset?

Back

To determine the frequency of a specific score, count how many times that score appears in the dataset.

Front

What is the significance of the median in a dataset?

Back

The median is the middle value of a dataset when it is ordered from least to greatest. It is significant because it provides a measure of central tendency that is not affected by outliers.

Front

How do you interpret a box and whisker plot?

Back

In a box and whisker plot, the box represents the interquartile range (IQR), the line inside the box represents the median, and the 'whiskers' extend to the minimum and maximum values, showing the spread of the data.

Front

What does it mean if one gym has a higher IQR than another?

Back

A higher IQR indicates that the data points in that gym are more spread out, meaning there is greater variability in the scores or measurements compared to the other gym.