Sample or Population
Random or Not Random
Sampling Variability
What are the Chances
Final Jeopardy
100
Would you survey the population or a sample if you wanted to know: what is the favorite food of the students in this class?
population
100
Would the following sample be considered random? Population: Middle School of Pleasantville; Sample: the students on your floor
Not Random
100
Francis takes two random samples from all the students in her school. The first sample had a total of 10 students. The second sample had a total of 30 students. Which sample had the most variability?
The sample of 10
100
You and your friend cant decided which movie to see over the weekend. You decide to flip a coin to determine which movie to see. What is the probability that the movie you want to see is chosen?
50/50 or 1/2
100
Robert wanted to know how many hours a week students in his class spend on social media. Robert took a random sample of 10 of his classmates and got the following results: 6,5,7,3,10,4,8,6,9,7. Estimate the population mean by finding the mean this sample. Do you think Robert would get the same results if he took another random sample of 10 students from his class?
6.5 / no the results will be similar but it is unlikely he will get the same results
200
According the 2010 Cenus 34% of all residents in New Jersey own a pet. Was this statistic taken from a sample or a population?
population
200
Would the following sample be considered random? Population: Middle school of Pleasantville; Sample: use a random number table to select student id numbers
random
200
Fill in the blank: As sample size increases, sampling variability ___________?
decreases
200
A bag contains 4 blue cubes / 3 red cubes / 5 orange cubes / 6 yellow cubes and 2 green cubes. Which color cube has the highest probability of being selected?
Yellow
300
44% of responders to a university survey said they approved of the building of a new community swimming pool. Was this statistic taken from a sample or a population?
Sample
300
Would the following sample be considered random? Population: Pleasantville; Sample: the people out in your neighborhood at 10:00am on a Sunday morning
Not Random
300
Having a small amount of sampling variability will allow you to make more ________ estimations
acurate
300
A bag contains 4 blue cubes / 3 red cubes / 5 orange cubes / 6 yellow cubes and 2 green cubes. What is probability of selecting an orange or blue cube?
9/20 or .45
400
Are students at the Middle School of Pleasantville in favor of having recess? After all of the surveys completed by students at the Middle School of Pleasant were reviewed, 95% of student said they were in favor of recess. Was this statistic taken from a sample or a population?
population
400
True or False? Random samples of the same size from the same population will have the same results
false
400
As sampling variability decrease, what happens to the data points in the data distribution (dot plot)?
The data points cluster (get closer together)
400
Use the chart on the board to answer the following question: What is the probability that a randomly selected student will have at most 3 siblings?
37/40
500
Is listening to music while doing your homework distracting? In a study of 500 middle school students the average level of distraction was 6 out of 10. Was this statistic taken from a sample or a population?
sample
500
Describe how you could set up a random sample of students in this class?
Drawing names out of a hat
500
Around what point will the data cluster, when sampling variability is reduced?
the population mean
500
Use the chart on the board to answer the following question: What is the probability that a randomly selected student does not have 1 sibling?
26/40 or 13/20
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