Comparing Dot Plots: Key Concepts and Techniques

What does a dot in a dot plot represent?

• The median of the data

• The mean of the data

• A single data point

• A category of data

Which shape of data has a clear middle with even distribution on both sides?

• Skewed left

• None of the above

• Symmetric

• Skewed right

What is the best representation of the center when data is skewed?

• Mean

• Median

• Mode

• Range

How is the spread of data represented?

• Average of all data points

• Sum of all data points

• Number of data points

• Difference between highest and lowest data points

In comparing two classes' travel times, what is the first step in creating a dot plot?

• Calculating the mean

• Identifying the range

• Determining the median

• Placing dots for each data point

What does the median represent in a dot plot?

• The average value of all data points

• The difference between the highest and lowest points

• The middle value of the dataset

• The most frequent data point

How do you find the difference between the centers of two dot plots?

• Subtract the means

• Subtract the medians

• Add the ranges

• Compare the modes

If a room's data distribution has no pattern, can it be considered symmetrical?

• Only if skewed left

• Yes

• No

• Only if skewed right

Is the statement 'Room 434 has a smaller range than 425' true or false?

• Depends on the median

• True

• Cannot be determined

• False

Which statement is true regarding the distributions of room 425 and 434?

• Both rooms have skewed distributions

• Both rooms have symmetrical distributions

• Room 425 is symmetrical, and room 434 is skewed right

• Room 425 is skewed left, and room 434 is symmetrical