TI-84 Calculator Statistics Functions

This video tutorial demonstrates how to use the TI-84 calculator's one variable stat tool to calculate the sample standard deviation from data presented in a frequency table. It guides viewers through entering data into lists L1 and L2, selecting the appropriate statistical tool, and interpreting the results. The tutorial also provides instructions for using older versions of the TI-84 or TI-83 calculators and reviews the formulas for both sample and population standard deviation.

What is the primary purpose of using the one variable stat tool on the TI-84 calculator?

• To calculate the mean of a dataset

• To determine the standard deviation from a frequency table

• To find the median of a dataset

• To calculate the mode of a dataset

What is the first step in entering data into the TI-84 calculator?

• Pressing the 'Graph' button

• Clearing old data from L1

• Entering the frequency in L2

• Selecting the one var stat tool

Where should the aptitude scores be entered in the TI-84 calculator?

• In L4

• In L3

• In L2

• In L1

How do you select the one var stat tool on the TI-84 calculator?

• Press 'Stat', right arrow to 'Calc', and select '1'

• Press 'Mode' and then 'Enter'

• Press '2nd' and then 'Stat'

• Press 'Graph' and then 'Enter'

What should you do if your data is located in L2 instead of L1?

• Press '2nd' and then '3'

• Press '2nd' and then '4'

• Press '2nd' and then '2'

• Press '2nd' and then '1'

What is the sample standard deviation denoted as on the TI-84 calculator?

• sx

• σx

• σ

• μ

What is the approximate value of the sample standard deviation in this example?

• 1.80

• 1.74

• 1.64

• 1.70

On older versions of the TI-84, where does the one var stats result appear?

• On the graph screen

• In the matrix editor

• On the home screen

• In the list editor

How do you enter the frequency list on older versions of the TI-84?

• Press '2nd' and then '4'

• Press '2nd' and then '3'

• Press '2nd' and then '2'

• Press '2nd' and then '1'

What is the formula for calculating sample standard deviation by hand?

• The sum of deviations divided by the number of observations

• The sum of squared deviations divided by the number of observations

• The square root of the sum of squared deviations divided by the number of observations minus one

• The square root of the sum of deviations divided by the number of observations