Always check to see if your answer in the calculator is in scientific notation. On the right side of the screen, if you see an “E” followed by a number, that means your answer is in scientific notation. If the number is positive, move the decimal place from the screen answer to the right that many times. If the number is negative, move the decimal place from the screen answer to the left that many times.

Computing summary statistics, including sample mean and sample standard deviation

Entering Data Into a List:

1. Press the “data” button. This will open up the list screen and you can start entering data.
2. Type each observation and press the “enter” button. You can delete an entry by pressing the “delete” button. 
3. Once you’re done entering the data, push the “2nd” button and then the “mode” button to “quit.”

Computing Statistics After Entering the Data:

1. Press the “2nd” button and then “data.” Then either press “2,” or press the down arrow and then “enter” to choose option 2:1-Var Stats. 
2. In the DATA row, select the correct list that you entered your data into and press “enter” to select.
3. In the FRQ row, make sure ONE is highlighted. 
4. Press the down arrow to highlight the word CALC, press “enter.”
5. The next screen displays n, the sample mean, and sample standard deviation in items 1, 2, and 3. Items 7, 8, 9, and the two items after 9 are the five-number summary.

Section 5.3 The Binomial Distribution

Computing Binomial Coefficients:

1. Type the top number, then press the “! nCr nPr” button two times. The screen should now display nCr. 
2. Type the bottom number, then “enter.”

Using the Binomial Probability Formula:

1. Press “2nd” then “data” to get to stat-reg/distr.
2. Right arrow to the DISTR tab.
3. Press “4” to choose option 4:Binomialpdf (or arrow down to 4 and then press “enter”).
4. Select SINGLE by highlighting it and pressing “enter.”
5. Type in n, p, and x in the appropriate places, pressing “enter” after each entry.
6. Press “enter” to CALC.

Chapter 6 The Normal Distribution

Finding the Percentage of Observations Between Two Values

1. Press “2nd” then “data” to get to stat-reg/distr.
2. Right arrow to the DISTR tab.
3. Press “2” to choose option 2:Normalcdf (or arrow down to 2 and then press “enter”).
4. Type in the mean, standard deviation, lower bound, and upper bound, pressing “enter” after each entry.
5. Press “enter” to CALC.

Finding the x-value with p% of observations Less Than x

1. Convert p to decimal format by dividing by 100. This is the area under the normal curve to the left of x.
2. Press “2nd” then “data” to get to stat-reg/distr.
3. Right arrow to the DISTR tab.
4. Press “3” to choose option 3:invNormal (or arrow down to 3 and then press “enter”).
5. Type in the area, mean, and standard deviation, pressing “enter” after each entry.
6. Press “enter” to CALC.