Calculating Mean with TI-84

This video tutorial demonstrates how to calculate the mean of a data set using the TI-84 calculator's one-variable statistics tool. It covers entering data into the calculator, selecting the appropriate tool, and interpreting results on both newer and older versions of the TI-84 and TI-83 calculators. The tutorial aims to simplify the process of finding the mean, providing step-by-step instructions for both data entry and calculation.

What is the first step in calculating the mean by hand?

• Subtract the smallest value from the largest

• Multiply the data values

• Sum the data values

• Divide the data values by the number of values

How many data values are used in the example provided?

• Five

• Six

• Seven

• Four

Which key do you press first to enter data into the TI-84?

• Clear

• Mode

• Stat

• Graph

Where should the data be entered in the TI-84 calculator?

• L4

• L2

• L1

• L3

What is the first option in the calculate menu for one-variable statistics?

• Edit

• Graph

• One-var stats

• Two-var stats

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

• Press clear

• Press second, then 1

• Press second, then 2

• Press enter

What is the default list for data entry in the older version of the TI-84?

• L1

• L3

• L2

• L4

What is the symbol for the mean in the TI-84 calculator?

• W bar

• Y bar

• Z bar

• X bar

To how many decimal places is the mean calculated in this example?

• Three

• Four

• Two

• One

What is the approximate mean of the dataset in the example?

• 19.18

• 20.18

• 21.18

• 22.18