Census Simulation Experiment Sampling

using a mathematical or physical model to reproduce the conditions of a study

• simulation

• survey

• randomization

• replication

survey that counts all the population

• confounding variable

• blinding

• census

• bias

A school has 70 seniors that qualify for a national scholarship contest. The school can only submit 5 names. Start at the beginning of the first row of random number table provided, what numbers would be the winners you would submit?

• 28, 70, 35, 17, 9

• 2, 8, 3, 5, 7

• 28, 51, 48, 6, 69

• 28, 35, 17, 9, 45

Suppose that 25 percent of women and 22 percent of men would answer yes to a particular question. In a simulation, a random sample of 100 women and a random sample of 100 men were selected, and the difference in sample proportions of those who answered yes, was calculated. The process was repeated 1,000 times. Which of the following is most likely to be a representation of the simulated sampling distribution of the difference between the two sample proportions?

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A class of 20 students includes 14 seniors and 6 juniors. Each day, the teacher randomly selects an SRS of 4 students to present the answer to a homework question. Which of the following correctly describes one trial of a simulation to estimate the probability that all four chosen are juniors?

• Let 1 - 70 = senior and 71 - 100 = junior. Generate 4 random integers with replacement from 1 to 100 and count how many integers are between 71 and 100.

• Let 1 - 70 = senior and 71 - 100 = junior. Generate 4 random integers without replacement from 1 to 100 and count how many integers are between 71 and 100.

• Let 1 - 14 = senior and 15 - 20 = junior. Generate 4 random integers with replacement from 1 to 20 and count how many integers are between 15 and 20.

• Let 1 - 14 = senior and 15 - 20 = junior. Generate 4 random integers without replacement from 1 to 20 and count how many integers are between 15 and 20.

• Let 1 - 14 = senior and 15 - 20 = junior. Generate 6 random integers with replacement from 1 to 20 and count how many integers are between 15 and 20.

This method involves study of each and every items of the universe

• Sampling

• Census

• Random sampling

• None of these

An ​ (a)   does not have treatments imposed.

An ​ (b)   has treatments imposed.

• Observational Study

• Experiment

This deliberately imposes some treatment on individuals to measure their responses.

• explanatory variable

• response variable

• factor

• experiment

Elise gave each member of the class a random cookie, some from recipe A and some from recipe B. Then she observed which students returned for a second cookie

What data collection method was used?

• Observational Study

• Experiment

• Survey

• Simulation

To survey the student body, Ms. Elliot asks every 10th person she sees in the hallway whether they like Mr. Westall or not. Which method is she using?

• Stratified Sample

• Cluster Sample

• Random Sample

• Convenience Sample

• Systematic Sample