BASSmark #3 Review

Mean Absolute Deviation

100

What is the first step of solving a Mean Absolute Deviation Problem?

Put the Numbers in Order (Least to Greatest).

200

Name the columns of a MAD Chart.

Ordered Data (Least to Greatest), Mean, Difference (Original numbers minus mean), Absolute Value of Differences (Positive values of previous column).

300

A lot of students will start a MAD problem, but they get the answer wrong, because they stop after they finding the mean. What else do they still have to do?

After finding the mean, they still have to: 1. Find the difference (Data - mean), 2. Find the positive values of the difference, 3. Find the mean of the differences (add up the positive values and divide by how many there are).

400

Five friends were at the batting cages. They each had 10 pitches and their total hits were 0, 1, 4, 5, and 10. They found out the average (mean) of their scores is 4, but they want to know more about how similar their scores are. What is the Mean Absolute Deviation of their hits.

The M.A.D. of their hits is 2.8

500

The starting players on the Phoenix Suns are P.J. Tucker (6ft. 6 in.), Channing Frye (6ft 11in.), Miles Plumlee (6ft 11 in), Gerald Green (6ft 8 in), and Goran Dragic (6ft 3in). What is the Mean and Mean Absolute Deviation of their heights. (Hint, convert all heights to inches. 6ft = 72 inches).

Mean = 79.8 M.A.D.= 2.64

Simple Probability

100

When setting up your ratio for a probability problem, which number goes on top, and which number goes on bottom?

Favorable on top and Total Possible Outcomes on bottom.

200

You are rolling a number cube. What's the probability that you land on either an even number, a 5, or a 1?

Probability = 5/6.

300

You have a bag of jellybeans. 6 are red, 4 are purple, 4 are white, 5 are green, 2 are orange, and 3 are black. You only like the red, purple and white jellybeans – the rest are gross. What's the probability that you reach in the bag and pull out a jellybean you like on the first try.

Probability = 7/12.

400

You will view a table that shows the survey data from Ms. Bass's 2nd, 4th, and 6th period classes. If you choose a random student from this group, what is the probability you pick someone who does not care most about Animal Abuse? (Write down the question being asked and all important data right now, before this question goes away!)

Probability = 53/86

500

You will view a table that shows the survey data from Ms. Bass's 2nd, 4th, and 6th period classes. If you choose a random student from this group, what is the probability you pick someone who cares most about either Hunger or Poverty?

Probability = 8/43

Compound Probability

100

You have two number cubes. What is the probability of rolling an even on one cube and an odd on the other?

The probability of rolling an even and an odd is 1/4

200

You have a bag of jellybeans. 6 are red, 4 are purple, 4 are white, 5 are green, 2 are orange, and 3 are black. What is the probability that you pull out a disgusting black jelly bean, put it back, and pull out a delicious purple jelly bean?

The probability of pulling a black, replacing, and pulling a purple is 1/48

300

You will view a table that shows the survey data from Ms. Bass's 2nd, 4th, and 6th period classes. Fred, an 8th grader, chooses two people from that group to be best friends with. What is the probability that his first friend thinks Dinosaurs are most awesome and the second thinks Zombies are most awesome? (Hint: Write down the question and all important info RIGHT NOW, before this question goes away and the chart goes up!)

The probability of choosing someone who likes Dinosaurs and someone who likes Zombies is 45/1462

400

You will view a table that shows the survey data from Ms. Bass's 2nd, 4th, and 6th period classes. If Ms. Bass sometimes calls the same student twice, what is the probability that she calls on someone who likes Unicorns best and then calls on someone who likes Vampires best? (Hint: Write down the question and all important info RIGHT NOW, before this question goes away and the chart goes up!)

The probability of calling on someone who likes Unicorns, then someone who likes Vampires is 49/1849

500

5. DOUBLE JEOPARDY - Worth twice the points! You have two number cubes, and you are trying to roll doubles. What is the probability of rolling doubles on your first try.

The probability of rolling doubles is 1/6.

Population Inference

100

When solving population inference questions, you set up what type of problem?

A proportion

200

Scientists in Albuquerque catch 50 Sandhill Cranes, tag them, and release them back into the wild. Later, those scientists catch 70 Sandhill cranes and find that 16 are tagged. Find the population of Sandhill Cranes in Albuquerque. 1. Set up a proper proportion (but don't solve) 2. Label your ratios to show how the numbers are related to each other.

1. 50/x = 16/70 2. Portion tagged/total population = Portion Tagged/Sample Population (Tagged over total equals Tagged over total)

300

Scientists caught, tagged, and released 20 wild burros in Dayton, NV. A month later, they caught 80 wild burros, and 2 of them were tagged. Write a proportion and solve in order to estimate the population of wild burros in Dayton.

Proportion: 2/80 = 20/x. Population of Burros = 800.

400

Out of 86 total seventh graders that were surveyed in Ms. Bass's classes, 36 listed “Playing Sports” as their favorite thing to do. If there are about 127 total students in the 7th grade Diamondbacks, write a proportion and estimate how many of those would prefer playing sports.

Proportion: 36/86 = x/127 Portion of total population that prefers sports: About 53 students.

500

Scientists caught, tagged, and released 100 unicorns. Later, they caught 200 unicorns and 40 of those were tagged. 1. Set up a proportion that would help you estimate the population of unicorns. 2. LABEL your numbers in each ratio to show how the numbers are related to each other. 3. Solve

1. 40/200 = 100/x 2. Number Tagged/Sample Population = Number Tagged/Total Population (Tagged over total equals tagged over total) 3. Total Population = 500 unicorns.

Mixed Bag-O-Math

100

Solve: -8 x 1/3 =

-2 2/3

200

Solve: -24.07 + -15.12 =

-39.19

300

List two ways to improve your grade before report cards.

Possible Answers: Turn in late work. Retake Formatives. Protect your Bass Cash for Extra Credit. Do All-Rights of past work. Study for benchmarks so you can do your very best on them.

400

If missed 3 out of 20 questions on your homework, what percent did you get right?

You got 85% right.

500

4. When ADDING integers? (What sign will the answer have?) A. If both are positive B. If both are negative C. If one is positive and one is negative

A. Positive (Keep the sign of both numbers) B. Negative (Keep the sign of both numbers) C. Keep the sign of the larger number. (Could be either positive or negative.