Desmos Data Analysis Concepts

The video tutorial demonstrates how to use Desmos for statistical analysis, including calculating basic statistics like minimum, maximum, and median, as well as creating quartiles, box plots, histograms, and relative frequency histograms. It also covers finding the mean and standard deviation, emphasizing the ease of using Desmos for these tasks.

What is the first step to start graphing in Desmos after copying your data?

• Email the data to yourself.

• Open a new spreadsheet.

• Type 'desmos' in the address bar and click 'Start Graphing'.

• Paste the data directly into Desmos.

Which function in Desmos helps you find the smallest value in a dataset?

• max()

• quartile()

• median()

• min()

What does the first quartile represent in a dataset?

• The average of the dataset.

• The value below which 25% of the data falls.

• The middle value of the dataset.

• The value above which 25% of the data falls.

In a box plot, what does a longer right whisker indicate about the data distribution?

• The data has no skew.

• The data is skewed to the left.

• The data is skewed to the right.

• The data is normally distributed.

What is the purpose of adjusting the x-axis range when creating a box plot in Desmos?

• To remove outliers.

• To add more data points.

• To ensure all data points are visible.

• To change the color of the plot.

How can you adjust the bin width when creating a histogram in Desmos?

• By adjusting the y-axis.

• By clicking on the bars.

• By typing a comma followed by the desired width.

• By changing the color of the bars.

What does a relative frequency histogram show?

• The total number of data points.

• The percentage of data points in each bin.

• The average value of the data points.

• The absolute count of data points.

What is the difference between sample and population standard deviation in Desmos?

• Sample standard deviation is always larger.

• Population standard deviation is used when the dataset is a sample.

• Sample standard deviation is used when the dataset is a sample.

• There is no difference.

How is the mean of a dataset calculated in Desmos?

• By typing 'sum()' and dividing by the number of data points.

• By typing 'mean()' and pasting the data.

• By typing 'average()' and pasting the data.

• By typing 'median()' and pasting the data.

What does the standard deviation tell us about a dataset?

• The maximum value in the dataset.

• The total number of data points.

• The average distance of each data point from the mean.

• The sum of all data points.