Download Using the Graphing Calculator

Name: _________________________________
Date: _____________
Using the Graphing Calculator
Computing the 5 number summary:
Steps to “punch” into Graphing Calculator:
1. Press STAT.
2. Press 1 to choose Edit.
3. Enter the data in List 1 (L1). Be sure to press ENTER or the down arrow after each entry.
Example: Enter in the following data set:
{ 400, 455, 390, 450, 360, 320, 480, 480}
4. To find basic statistical information on your list, press STAT, go over to CALC, choose #1
(1-Var Stats). This computes the mean, standard deviation, and the five number
summary.
Let’s Try an example together!!!
Some of you may have used calculators, and these calculators may have items stored in
memory by the previous owner. In addition, after you have been using your calculator
for a few weeks, you may find that you have quite a bit of clutter in the memory. To
clear all memory of the calculator, press 2nd, MEM (the second function of the + key).
Choose Reset. The calculator will want to know whether you wish to reset All RAM,
or just the defaults. Choose All RAM. The calculator also wants to protect you from
inadvertently deleting items that you want to keep, so the calculator will ask you,
“RESET RAM”? Choose Reset. The calculator will then tell you, “RAM cleared.”
Entering a data set into your graphing calculator:
We have a list of final exam scores for a class of 25 students, and we want to enter the data and
calculate simple descriptive statistics to characterize the data set. The data values are as follows:
86
52
69
74
64
83
71
78
77
79
56
88
73
71
98
75
78
90
83
72
91
81
85
64
64
1. Enter in the list above.
2. Go to STAT; CALC; 1: 1-Var Stats
3. Write down the descriptive statistics:
Mean denoted as ‘x bar’ (x
̅) =
Standard deviation denoted as ‘lowercase sigma’ (σ x)=
n (represents the number of items you entered in the list) = should be 25
min =
Q1=
Med=
Q3=
Max=
Answers: Mean = 76.08, Standard deviation = 11.00727032, Minimum = 52, First quartile = 70, Median = 77, Third
quartile = 84, Maximum = 98