1. The simulation involved modeling the making of chocolate chip cookies with a random number of chips in each cookie. Data was collected from 5 batches of 10 cookies each to determine the average number of chips used. 2. On average, 88.8 chips were needed per batch, with 19 chips wasted on average since the goal was 7 chips per cookie. Each cookie ended up having an average of 9 chips. 3. The simulation could have used a deck of cards instead of a calculator to generate random numbers by removing some cards and flipping them over randomly. This would allow modeling different chip requirements like 6 chips per cookie.

1. Simulation Report Writing: Choc Chip Cookies
In your report you will need the following headings and sub-headings.
Name: Lacey Elliott Title: Choc Chip Cookie report
Materials:
- Pen
- Calculator
- Book (paper)
Method:
First we had to find a way to create random numbers. To do this we are going to use our Calculators. This
is how you create random numbers using a calculator:
1) On your calculator press MATH, which is below the green key.
2) Arrow over three times until you reach PRB
3) Arrow down to 5. randlnt( Then press ENTER
4) After the parentheses, enter: lowest value, and your highest value) Eg. randlnt(0,100)
Your screen will now display random counting numbers between 1 and 100 if you keep pressing ENTER.
Once you know how to do that you create a table. The table should have twelve rows and three columns.
So you can have the cookie number (amount of cookies), Chips (amount of choc chips needed) and the
totals. The table should look a bit like this.
The total amount of chips in
each individual cookie.
COOKIE CHIPS TOTAL
The random numbers from
your calculator (chips used)
1
The Cookie number,
determining which cookie it is.
2
3
4
5
6
7
8
9
10 The total amount of choc chips
needed for all 10 cookies.
TOTAL
Now you go back to your calculator and bring up the random numbers, your lowest value should be 1 and
your highest value should be 7. Now you start pressing ENTER on your calculator so you can begin
getting your results. The aim is to get seven chips into each cookie, if you get a 4 on your first cookie you
still go on to your second cookie until you have done all 10. When you have done all ten you go back to
number 1. Let’s say you now get a 5, remember you had a 4 before so your cookie will now have 9 choc
chips in it, this means you don’t have to have another random number for this cookie. You continue to get
your random numbers and adding on Choc Chips to your cookies, remembering to record all this Data in
your table. Once all the cookies have 7 Choc Chips in them you add up the total amount of Chips in each

2. cookie, then using that data you can count all the chips you used within your first batch of cookies. You
continue doing this same thing five or six times. That means you will have 5 batches of ten cookies.
Data Collected through playing the game:
The Data I collected throughout the game was my five tables recording the amount of Choc chips used to
make the cookies. This is what the tables recorded:
BATCH 1)
Cookie Chips Total
1 7, 7
2 5,4, 9
3 1,6, 7
4 3,3,4, 10
5 4,5, 9
6 2,4,3, 9
7 2,1,7, 10
8 7, 7
9 7, 7
10 5,7, 12
TOTAL 87
BATCH 2)
Cookie Chips Total
1 2,6, 8
2 3,6, 9
3 7, 7
4 5,3, 8
5 4,6, 10
6 2,3,7, 12
7 7, 7
8 6,6, 12
9 4,6, 10
10 1,5,5, 11
TOTAL 94

3. BATCH 3)
Cookie Chips Total
1 1,5,7, 13
2 4,4, 8
3 1,2,7, 10
4 3,5, 8
5 5,3, 8
6 5,4, 9
7 3,4, 7
8 3,2,2, 7
9 3,3,4, 10
10 2,4,5, 11
TOTAL 91
BATCH 4)
Cookie Chips Total
1 2,2,6, 10
2 5,2, 7
3 5,4, 9
4 2,6, 8
5 3,1,4, 8
6 3,2,6, 11
7 7, 7
8 1,1,6, 8
9 5,3, 8
10 7, 7
TOTAL 83

4. BATCH 5)
Cookie Chips Total
1 3,1,3, 7
2 2,3,5, 10
3 5,5, 10
4 5,2, 7
5 6,3, 9
6 4,3, 7
7 6,5, 11
8 5,5, 10
9 3,3,4, 10
10 7, 7
TOTAL 89
Analysis:
1. What was the average number of chips needed for the 10:7 simulation?
The number of Chips needed to make sure the family is happy is 89 Choc Chips per Batch, which contains 10 cookies. This is
how I worked out the average.
87 + 94 + 91 + 83 + 89 = 444
444 ÷ 5 = 88.8
2. On average how many chips were wasted for the 10:7 simulation?
If you had 7 Choc chips in each cookie, which is the recommended amount you would need 350 Choc Chips for 5 batches. The
average for this is:
70 + 70 + 70 + 70 + 70 = 350
350 ÷ 5 = 70
This means the amount of chips wasted was:
88.8-70 = 18.8 Chips
overall this means there was 19 chips wasted.
3. On average how many chips did each cookie have?
On average the cookies had 9 chips in them. This is how I worked this out:
Total of cookies in each batch ÷ number of cookies = average number of chips used for this Batch
BATCH 1) BATCH 2) BATCH 3)
87÷10= 8.7 94÷10=9.4 91÷10= 9.1
=9 =9 =9
BATCH 4) BATCH 5)
83÷10=8.3 89÷10= 8.9
=8 =9
Discussion:
1. How could this simulation have been re-created using a deck of cards? (Hint: You can
take some of the cards out of the deck)
This simulation could have easily been re-created using a deck of cards. You could take out the 8’s, 9’s, 10’s, Jacks, Queens, and
Kings. And just replace one with the Aces.
Now instead of having a calculator to create random numbers, you have your cards!
Just turn them upside down, shuffle them and randomly flip them over to create your random numbers.

5. 2. How would you run a simulation for a 6:3 requirements?
I would run it just the same. But using different numbers of course. I would create all my data the exact same.
Using the calculator to create the random numbers.
3. Were the results what you expected before running your simulation?
Not really, I was expecting the results to be a little higher. I wasn’t too far off it though.
Conclusion:
From this task I learnt alot about probability. I learnt how to work out averages, how to use and create
Random numbers using a calculator, how to create random numbers using a deck of cards, what random
numbers actually are, how to work out frequency and how to create data using random numbers.
This task was all pretty good! But if I had the choice I would have just made it one or two batches, but I
suppose you make it more accurate the more you do.
I found learning how to create the random numbers was interesting, and very good because it will be very
useful for other things.