LT: 9-5: Predictions

LT: 9-5: Predictions

LT: 9-1: Measure of Central Tendency

LT 9-4: Geometric Probability

LT: 9-2: Inserting Data

Unit Nine Vocabulary

100

A manufacturer inspects 250 i-pods and finds 197 of them have no defects. The manufacturer sent a shipment of 1,000 i-pods to a distributor. Predict the number of i-pods in the shipment that will have no defects.

What is 788 ipods?

100

Use the Weights of Dogs stem and leaf plot to find the mean of the data set.112,112,116,133,145

What is 123.6?

100

The circle formula used when determining geometric probability.

What is the area formula of A = pi(r)(r)

100

Kyle purchased four video games from Game Stop. The average price of the video games was $45. When he bought a fifth game at Best Buy, his average went up to $48. How much was the game at Best Buy?

What is $60?

100

The sum of the numbers divided by the number of addends.

What is mean?

200

Dale conducted a survey of the students in his classes to observe the distribution of eye color. In a sample survey of eighty students, twelve students have blue eyes. If the distribution of eye color in Dale’s grade is similar to the distribution in his classes, about how many of the 360 students in his grade would be expected to have blue eyes?

What is 54 students?

200

Use the Weights of Dogs stem and leaf plot to find the median of the data set.112,116,133,145,112

What is 116?

200

The area of the circular region. d= 28

What is 615.44 square inches?

200

Amanda spent $125 total in the first 5 stores at the mall. If she spent $23 in the sixth store did the mean go up, go down, or stay the same?

What is down?

200

The middle number of the data set.

What is median?

300

A spinner is divided into 8 equal sections and four are green, Ben spins the spinner 20 times. It lands on green 9 times. How many more times does Ben need to spin the spinner and have it land on green for the relative frequency to equal the theoretical probability?

What is two more spins?

300

Use the Weights of Dogs stem and leaf plot to find the mode of the data set. 112,112,116,133,145

What is 112?

300

The area of the entire target. d= 32

What is 803.84 square inches?

300

Given the following test scores, a student wants to earn the highest grade possible. The teacher has told the students they can select what they want for their final grade. Which one, mean or median, would give the student the best possible score?
Test scores were: 88, 93, 80, 91

What is median?

300

The number or numbers that occur the most in a data set.

What is mode?

400

A quality inspector examines a sample of 25 strings of lights and finds that 6 strings of lights are defective. What is the best prediction of the number of defective strings in a delivery of 1000 strings of lights?

What is 240 strings of lights.

400

Use the Weights of Dogs stem and leaf plot to find the range of the data set. 112,116,133,145,112

What is 33?

400

Record your answer as a percent.
P(unshaded) = shaded =21.5%

What is 78.5%?

400

If four friends had an average score of 92 on a test, what was Doug's score if Bill got an 86, Annie got a 98, and Demetrius got a 90?

What is 94?

400

The difference between the greatest and the least number in a data set.

What is range?

500

Before a school election, a sample of votes gave Taylor 28 votes, Steven 41, and Maria 11. Based on these results, predict the number of votes for Steven if 1600 students vote.

What is 820 students.

500

On a stem and leaf plot key.
0|3 is the the same as ___

What is 3?

500

Record your answer as a percent.
P(shaded) = unshaded 14.2%

What is 85.8%?

500

Anthony is working very hard to get his best grades ever. He has taken 7 spelling tests and the result are shown below:
What possible scores could he earn on the final spelling test to earn an 80% average?
Scores: 90, 88, 85, 95, 85, 70, 100

What 27?

500

Another term for mean.

What is average?

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