2/16 bell-ringer

Which of the following lists all parts of the five number summary?

• Mean, Median, Mode, Range, and Total
• Minimum, Quartile 1, Median, Quartile 3, and Maximum 
• Smallest, Q1, Q2, Q3, and Q4
• Minimum, Maximum, Range, Mean, and Median

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean
• Median
• Mode
• Range

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Sigma

How do you find the median of a data set that has two middle numbers?

• You pick the higher middle number

• You pick the lower middle number

• Add the two middle numbers and divide it by 2

• Subtract the two middle numbers and divide by 2

How do you calculate the standard deviation when you have the variance?

• Divide the variance by 2.

• Its a long process and I can't explain it right now.

• Find the mean and multiply it by the variance.

• Take the square root of the variance.

What does this symbol represent?

• Variance
• Standard Deviation
• Mean Absolute Deviation
• Sigma

What is the range in statistics?

• (Highest + lowest)/2

• Highest - lowest

• (Highest - lowest)/2

• (Highest - lowest)²

Before you can begin calculating the variance, you must first:

• find the mean

• find the median

• find the mode

• find the range

Once you've calculated the mean, and listed the values in a table, what is the next step to calculating the variance?

• Square each value in the data set

• Subtract each value in the data set from the mean

• Subtract the mean from each value in the data set

• Add the mean to each value in the data set

After subtracting the mean from each value in the data set, the next step is to find the sum of those differences.

• True, then square that sum.

• False. Square the differences, then find the sum.