Calculating Range, Variance, and Standard Deviation on TI Calculators

This video tutorial explains how to use a calculator to find the range, sample variance, sample standard deviation, and population standard deviation for a small data set. It covers entering data into a list, sorting it, and using the one variable statistics function on a calculator. The tutorial also explains the notation for standard deviation and variance, and how to calculate them manually if needed.

What is the first step in using the calculator to find statistical measures?

• Calculating the range

• Sorting the data

• Entering data into a list

• Pressing the stat key

How do you sort the data in the calculator?

• Entering data in ascending order

• Pressing the sort key

• Pressing the stat key and selecting sort

• Using the one-variable statistics function

What is the range of the data set 3, 5, 8, 13, 21?

• 16

• 3

• 21

• 18

Which function on the calculator is used to find sample and population standard deviations?

• Standard deviation function

• Variance function

• One-variable statistics

• Two-variable statistics

What symbol is used for sample standard deviation on paper?

• S squared

• s

• Sigma

• SX

How would you round a sample standard deviation of 7.21 to the nearest tenth?

• 7.20

• 7.2

• 7.21

• 7.3

What is the correct notation for population standard deviation?

• S squared

• Sigma

• SX

• s

How do you calculate the sample variance?

• By adding all data values

• By squaring the sample standard deviation

• By taking the square root of the sample standard deviation

• By subtracting the smallest data value from the largest

What is the sample variance if the sample standard deviation is 7.21?

• 52

• 41.6

• 7.21

• 6.45

What is the population variance if the population standard deviation is 6.44?

• 7.21

• 6.45

• 41.6

• 52