Texas Instruments TI-73 User Manual

Page 78

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Probability and Statistics

Activity 12: Which Brand is Best?

73

© 1998 T

EXAS

I

NSTRUMENTS

I

NCORPORATED

9. Now enter the surveyed information into the TI-73.

a. Enter the brand names in

L

2

. (In this example, we

use the brand names from the example table.)

3 " to

L

2

- t # #, and then

" until

"

b

$ $, and then ! until

A

b

# # # # to

Done

b b

(Because

"

is only needed for the first element of a

categorical list, you can enter the rest of the
elements from the Text editor without it.)

b. Before entering the frequency, go back to

mode

and highlight

Float

.

. # to

Float

b

c. Now enter the tally.

3 " to

L

3

and enter the frequency

d. Go to the Home screen.

- l

10. Make a pictogram on the TI-73.

a. Access the

STAT PLOTS

menu.

- e (above the & key)

b. Make sure the other plots are off.

Q b

c. Select

Plot 1

.

- e b

d. With the cursor blinking on the word

On

, select it.

b

e. Move to

Type

and select the pictogram (first row,

third from left Î).

# " " b

f.

Move to

CategList

. If

L

2

is not already set, set it to

L

2

.

# - v Z

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