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17. two cointosstouchpad
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TI-Nspire Mini-Tutorials
A Probability Experiment with Two Coins
Summary of Keystrokes
Create a spreadsheet window and add three list headings:
c14``COIN1eCOIN2e
RESULTS·€‘ ‘(Make sure the cursor is on cell A1.)
Create a list of random numbers:
=k1I (Press Β€until you get to the int() command, then press
Β·)
kR (Press Β€ until you get to the rand() command, then press Β·)
Β’r5+1Β·
`b33(Press Β€for the number of cells you want to copy the
formula into, around 50, then pressΒ·. Press/Rto!generate a new series
of random numbers.)
Repeat this process for column B, starting at cell B1. Make sure that columns A
and B have the same number of rows of data.
Create a list to track the outcomes of the rolls of the dice.
(Move to the formula line for column C, which is the grey cell above cell C1.)
COIN1+COIN2Β·
Create a graph of the data.
/I5 (Highlight the horizontal axis. Press and hold a until
you see the spreadsheet data lists. Highlight RESULTS, then press Β·.)
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