In class today students began the Probability Test, and most will finish next week during SMART Block.
Homework: Check your answers to the Finding All Outcomes homework from Wednesday night. Nothing on the test is more complicated than the first five problems.
1. 12 combinations
2. 6 combinations
3. 2/8 = 1/4 = 25%
4. 3 children each with 2 chances - boy or girl so, 3 children/6 possible outcomes or 50%
5. each combination of die with the spinner results in a 50% chance of adding to an even number
6. 3 pres candidates x 4 vice pres x 4 secretary x 2 treasurers = 96 combinations
7. 2 tv types x 7 sizes x 3 brands = 42 combinations
8. 26 ABC's x 26 ABC's x 26 ABC's x 26 ABC's x 10 digits 0-9 = 4,569,760 combinations
9. each of the 6 sides of the die has 3 letter options for a total of 18 combinations
10 a. 26 x 26 x 10 x 10 x 10 = 676,000 combinations
10 b. 26 x 25 x 10 x 10 x 10 = 650,000 combinations
In class today we looked at the final section of probability - finding out all possible outcomes from combinations of events. As promised on Monday of this week, and it has been on the board all week, we will test Friday on probability.
Homework: Complete problems 1-10 on the back of the notes/class work page about Finding All Outcomes. I will post the answers tomorrow.
Today in class we discussed how to know when to subtract areas before finding the probability, and when you do not need to do so.
Homework: Watch the Wake County video on Math Probability Trees and take notes. Students wrote down the directions to find the video in class.
In class today we discussed again how to calculate independent and dependent probabilities. We also moved on to geometric probability which involves finding areas and putting those numbers into a fraction - both of which we know how to do.
Homework: Complete the right hand side of the page of notes from class today.
Answers to homework blanks:
Rectangle/3 Circles problem Parallelogram/Triangle problem
108 square inches 320 square inches
28.26 square inches 112 square inches
84.78 square inches 432 square inches
23.22 square inches 320 square inches
23.22/108 = 0.215 square inches 320/432 = 20/27 = 0.741
23.22/108 or 21.5% 20/27 or 74.1%
Triangle/Circle problem Triangle/Parallelogram problem
120 square inches 192 square centimeters
28.26 square inches 64 square centimeters
91.74 square inches 128 square centimeters
91.74/120 = 0.7645 128/192 = 2/3 = 0.6667
91.74/120 or 76.5% 2/3 or 66.7%
In class today we tried to take a SHORT quiz on what we have learned about probability and then move on to geometric probability.. Completing a four problem quiz took the whole class period, so we did not begin the next section.
In class today we nailed down our understanding of independent and dependent probability events.
Homework: Complete the Independent and Dependent Probability page from class. We will have a short quiz tomorrow on theoretical, experimental, independent, and dependent probability.
Today in class we went over homework problems and discussed theoretical vs. experimental probability before we continued our discussion of independent vs. dependent probability.
Homework: Complete the note side (right hand column) of the independent vs. dependent probability page. We were working in groups on the M&M problem when we wrapped up class. It should be set up correctly from class discussion.
In class today we began to explore independent vs. dependent probability.
Homework: Complete the rest of the Theoretical vs. Experimental Probability page by finishing up #21 - #32.
Today in class we continued to explore the concepts behind probability.
Homework: Please complete the group work items #1-5 on the notes side of the worksheet.
Complete the back left hand side of the note sheet, #6-20.
In class today we took notes and figured out a couple of probability examples.
Homework: On the back of the note page, do 1-5.