Math on the MindFind the mean, median, and mode. Which measure of central tendency best describes the data? 49 52 53 56 62 61 55 52mean 55; median 54; mode 52;

The mean best describes the data.

Using the TI-83+ to find the Mean & Median of DataUnit 2, Lesson 2

Using the data in the table, find the mean, median, and mode for the

water temperatures in Dauphin Island, AL.

Gulf of Mexico Eastern Coast Water Temperatures (°F)

J F M A M J J A S O N D

Dauphin Island, Alabama

51 53 60 70 75 82 84 84 80 72 62 56

classrooms.tacoma.k12.wa.us/foss/dfinney/.../12.3_-_analyzing_data.ppt...

Enter the data into a list.1. Press the STAT button2. Choose EDIT3. Type your data

http://mathbits.com/MathBits/TISection/Statistics1/BasicCommands.htm

Using the data in the table, find the mean, median, and mode for the

water temperatures in Dauphin Island, AL.

Gulf of Mexico Eastern Coast Water Temperatures (°F)

J F M A M J J A S O N D

Dauphin Island, Alabama

51 53 60 70 75 82 84 84 80 72 62 56

classrooms.tacoma.k12.wa.us/foss/dfinney/.../12.3_-_analyzing_data.ppt...

Find the Mean.1. Press 2nd and the STAT

button to access LIST2. Arrow over to MATH3. Choose 3:mean(4. Type 2nd and 1 to insert

L1

Using the data in the table, find the mean and median for the water

temperatures in Dauphin Island, AL.

Gulf of Mexico Eastern Coast Water Temperatures (°F)

J F M A M J J A S O N D

Dauphin Island, Alabama

51 53 60 70 75 82 84 84 80 72 62 56

classrooms.tacoma.k12.wa.us/foss/dfinney/.../12.3_-_analyzing_data.ppt...

Find the Median.1. Press 2nd and the STAT

button to access LIST2. Arrow over to MATH3. Choose 4:median(4. Type 2nd and 1 to insert

L1

The mean is about 69.1°F and the median is 71°F.

Another Method of Finding the Mean and Median

Given the data set {13, 3, 10, 9, 7, 10, 12, 8, 6, 3, 9, 6, 11, 5, 9, 13, 8, 7, 7}find the mean, median and mode.

Enter the data into a list.1. Press the STAT button2. Choose EDIT3. Type your data

http://mathbits.com/MathBits/TISection/Statistics1/MeanModeMedian.htm

1. Press STAT.  2. Arrow to the right

to CALC.   3. Choose option #1:

1-Var Stats. 4. Press ENTER.5. Arrow up and down

the screen.

http://mathbits.com/MathBits/TISection/Statistics1/MeanModeMedian.htm

Find the Mode STAT, #2 SortA(, and

specify L1 Look at the list (STAT, #1

EDIT). Examine the data to see which value(s) appear(s) most often.

The mode for this data set is 7 and 9.  Each of these values appears 3 times in the data set.

http://mathbits.com/MathBits/TISection/Statistics1/MeanModeMedian.htm