Quiz 1: sampling and data

A study is done to determine the average amount of television watched per week by California children. What is the phrase “average amount of television watched per week by California children” describing?

• A

  data

• B

  statistic

• C

  parameter

• D

  variable

How should you classify data from the following: What are the names of colleges you have attended?

• A

  quantitative - continuous

• B

  quantitative - discrete

• C

  qualitative

How should you classify data from the following: What is the number of times during the summer that you go to the beach?

• A

  quantitative - continuous

• B

  quantitative - discrete

• C

  qualitative

How should you classify data from the following: What is your weight?

• A

  quantitative - continuous

• B

  quantitative - discrete

• C

  qualitative

A study is done to determine the average salary for all Santa Clara County nurses. If we were to pick the Valley Medical Center, Good Samaritan Hospital, and Saint Louise Hospital in Santa Clara County and average together the salaries of all nurses, would this be a good sampling technique or a bad sampling technique?

A study is done to determine the average amount of television watched per week by California children. What is the phrase "the average amount of television watched per week by California children in a random survey" describing?

• A

  sample

• B

  variable

• C

  statistic

• D

  data

A study is done to determine the average amount of television watched per week by California children. Three of the California children watch two hours, 1 hour, and one-half hour, respectively. "Two hours, 1 hour, and one-half hour" are the:

• A

  data

• B

  statistic

• C

  parameter

• D

  sample

Determine the sampling technique: A medical researcher does a random survey of 100 female doctors and 100 male doctors.

• A

  stratified

• B

  systematic

• C

  simple random

• D

  cluster

Sixty-three people were asked the number of movies they saw in the movie theaters over their last vacation. Which of the following columns do we NOT add up?

• A

  frequency

• B

  relative frequency

• C

  cumulative relative frequency

Sixty-three people were asked the number of movies they saw in the movie theaters over their last vacation. Twenty-two people saw no movies, fourteen people saw one movie, ten people saw two movies, seven people saw three movies, six people saw four movies, and four people saw 5 or more movies. What percent of people saw 1 or 2 movies?

• A

  about 19%

• B

  about 38%

• C

  about 60%

• D

  about 89%