Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

Introduction to Statistics: Unit 1 Milestone 1 Exam with Answers, Exams of Mathematics

City University of New York (CUNY) - Hunter CollegeMathematics

A series of multiple-choice questions and answers covering key concepts in introductory statistics. It covers topics such as sampling methods, data types, experimental design, bias, and descriptive statistics. Useful for students studying introductory statistics and provides a self-assessment tool for understanding core concepts.

Typology: Exams

2024/2025

Available from 01/23/2025

Nursebrahim01
Nursebrahim01 🇺🇸

485 documents

1 / 7

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
INTRODUCTION TO STATISTICS UNIT 1
MILESTONE 1 EXAM WITH ANSWERS
Which of these statements best defines a stratified random
sample? - CORRECT ANSWER-It is a sample where the
population is first broken into groups and then elements are
randomly selected, in proportion, from each group.
Which of the following data types will be continuous? -
CORRECT ANSWER-The amount of snow that fell last night.
A study in which results are measured without intervention from
the researcher is called... - CORRECT ANSWER-Observational
study.
Which of the following best classifies the arrangement of bean
bags? - CORRECT ANSWER-Low accuracy and low precision.
Mike wants to find out the approximate income for professors in
Michigan. He decides to randomly select 50 professors who
work for a college or university in Michigan and obtain their
salaries.
What are the sample and the population of Mike's study? -
CORRECT ANSWER-The 50 professors that Mike interviews
are his sample, and all of the professors who work in Michigan
are the population.
James conducts a survey to study the relationship between cell
phone use and grades earned during the fall semester. James
suspects that there might be a lot of other factors that affect
grades besides cell phones.
pf3
pf4
pf5

Partial preview of the text

Download Introduction to Statistics: Unit 1 Milestone 1 Exam with Answers and more Exams Mathematics in PDF only on Docsity!

INTRODUCTION TO STATISTICS UNIT 1

MILESTONE 1 EXAM WITH ANSWERS

Which of these statements best defines a stratified random sample? - CORRECT ANSWER-It is a sample where the population is first broken into groups and then elements are randomly selected, in proportion, from each group. Which of the following data types will be continuous? - CORRECT ANSWER-The amount of snow that fell last night. A study in which results are measured without intervention from the researcher is called... - CORRECT ANSWER-Observational study. Which of the following best classifies the arrangement of bean bags? - CORRECT ANSWER-Low accuracy and low precision. Mike wants to find out the approximate income for professors in Michigan. He decides to randomly select 50 professors who work for a college or university in Michigan and obtain their salaries. What are the sample and the population of Mike's study? - CORRECT ANSWER-The 50 professors that Mike interviews are his sample, and all of the professors who work in Michigan are the population. James conducts a survey to study the relationship between cell phone use and grades earned during the fall semester. James suspects that there might be a lot of other factors that affect grades besides cell phones.

Which of the following could be a confounding variable in James's study? - CORRECT ANSWER-Time spent studying. Cindy measured and recorded the temperature of a liquid for an experiment. She used a poorly calibrated thermometer and noted the temperature as 100.5 degrees Fahrenheit. The actual temperature of the liquid was 95 degrees Fahrenheit. The percent error in her calculation is... - CORRECT ANSWER- 5.79% On a candy production line, 3% of bags are overfilled. An employee randomly selects 100 bags and finds that 5% are overfilled. A second employee takes another random sample of 250 bags and finds that 2% are overfilled. Which of the following explains why there is a difference between the two percentages? - CORRECT ANSWER- Random error; the numbers were different due to variability inherent in sampling. Rob sent an email survey to 2,000 cell phone owners asking about their satisfaction with their current plan. Only 256 people returned the survey and they were predominately 18-24 years old. Which of the following statements is true? - CORRECT ANSWER-The survey likely has bias because the people who could not answer differ from those who did answer. Regan wants to study how reading on a computer affects comprehension among elementary school students. Regan thinks that girls and boys might differ and he also suspects that grade level will affect the results. He decides to create a male and female group for each grade. Within each group, he

A survey result shows that cell phone usage among teenagers rose from 63% in 2006 to 71% in 2008. Of the following choices, which statement about cell phone use among teenagers is true? - CORRECT ANSWER-Cell phone usage rose by 12.7% A pizza owner asked 50 customers to taste a new type of topping and found that 40 people liked its taste. Which of these is an example of descriptive statistics? - CORRECT ANSWER-80% of the surveyed customers like the taste of the pizza topping. A factory manufactures motorcycles. One of its employees, working in the quality control department, checks the first 10 and the last 10 motorcycles manufactured in a day. This is what type of sampling? - CORRECT ANSWER- Convenience sampling. A retail brand plans to open its stores across all cities with a population of more than one million. To prepare for this, it refers to the past year's census done by the government. Which statement accurately describes the type of data the retail brand is using? - CORRECT ANSWER-The census is an example of available data because the government provides it. A new pet food product for small dogs has been developed to help with tooth decay. Fifty-two dogs participate in the study. Each dog owner picks a card from a standard deck out of a hat. If the card is red, their dog will be in the treatment group. If the card is black, their dog will be in the placebo group.

Which experimental design was used? - CORRECT ANSWER- Completely Randomized Design. The traffic volumes at a major intersection in New York were surveyed every day between one and four in the afternoon for a month to study the traffic patterns in the city. Which of the following types of bias affects the conclusions of the survey? - CORRECT ANSWER-Selection bias. Scientist want to test a new pair of running shoes. A speed test is performed with two separate groups of participants. The treatment group will wear the new pair of running shoes, while the control group will not. It is believed that age and height may affect speed. Which of the following would be most effective in controlling the confounding variables, such as age and height, in this study? - CORRECT ANSWER-A matched-pair design experiment. A survey conducted among students in the school cafeteria asked a set of questions listed below. Which survey question would produce a qualitative response? - CORRECT ANSWER-What is your favorite dish? In a study to assess the risk of obesity with the amount of time exercised per week, researchers matched each patient, in a sample of 500 people who are obese, with a person of the same ethnicity, gender, and age (along with other similar characteristics) who is not obese. The researchers asked the patients and their matches a series of questions, and then tracked eating and exercise habits regularly for several years. Which type of statistical study are the researchers conducting?

  • CORRECT ANSWER-Prospective study.

Which type of statistical study is the art teacher conducting? - CORRECT ANSWER-A survey. A different coffee seller offered to sell coffee to Jenae's company for half the cost of their current brand. Jenae knew her co-workers were really partial to the coffee they drank now, so she decided to conduct a study to see if they noticed the difference in flavor. Her co-workers were convinced they would. Jenae provided each person with a sample and said that some had the new coffee and some did not. Only Jenae knew who had which brand of coffee. Jenae's strategy is an example of a(n)... - CORRECT ANSWER-Blind experiment