3. A sociologist studying freshmen at a major university carried out a survey, asking (among other questions) how often students went out per week, how many hours they studied per day, and how many hours they slept at night. Students will often overstate the number of hours studied, because they do not want to admit to not studying enough. This type of distortion is called: a. false answer. b. non-response bias. c. undercoverage bias. d. response bias.

3. A sociologist studying freshmen at a major university carried out a survey, asking (among other questions) how often students went out per week, how many hours they studied per day, and how many hours they slept at night. Students will often overstate the number of hours studied, because they do not want to admit to not studying enough. This type of distortion is called: a. false answer. b. non-response bias. c. undercoverage bias. d. response bias.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

1) The sources for obtaining data for a study could be experiments, surveys and records. What is the difference between an experiment and a survey?
If 40% of all the students are taking four classes, and 60% of all the students are taking three classes, what is the mean (average) number of classes taken for this group of students?
Suppose you are representing the employees at a large corporation during contract negotiations. You have a list of the salaries of all the employees at the corporation (The salaries include the many lower level employees and the few high paid management employees) and you plan to find a measure of center (e.g. mean, median, or mode).a. Which measure or center would you use to represent the employees in an effort to support your claim that the average salary of lower level employees is much lower than the national average (for lower level employees) and thus should be increased? Mean Mode Median b. Why is this the better choice?
A food channel wishes to study breakfast preferences vs. geographical location and they send their intern out to gather information. The intern returns the table below. Avocado Toast Pancakes and Bagel and Cream Cheese Eggs East Coast 40 25 55 120 Middle States 33 12 53 98 West Coast 39 42 65 146 88 68 144 300 If the researcher hypothesized that breakfast preference and location were independent, how many people would he expect were from the East Coast and preferred Bagels out of these 300?
72a)It is a fact that cities with more churches also have more murders. If I were to use that information to claim that religion is bad for society because it encourages people to become murderers, this would be an example of which of the following misuses of statistics? Loaded questions. False causality. Biased samples. Data dredging. Data manipulation.
Graduate Science Students. According to Survey of Graduate Science Engineering Students and Postdoctorates, published by the U.S. National Science Foundation, the distribution of graduate science students in doctorate-granting institutions is as follows. Frequencies are in thousands. Note: Earth sciences include atmospheric and ocean sciences as well. Field Frequency Agricultural sciences 15.1 Biological sciences 69.7 Computer sciences 46.1 Earth sciences 14.9 Mathematical sciences 22.0 Physical sciences 38.7 Psychology 45.6 Social sciences 97.2 A graduate science student who is attending a doctorate-granting institution is selected at random. Determine the probability that the field of the student obtained is a. psychology.b. physical or social science.c. not computer science.
Consider the hypothetical study described below. Based solely on the information given, do you have reason to question the results of the study? Select all that apply. Sociologists studying domestic violence circulate a questionnaire asking each respondent if she or he has ever abused a spouse or partner. a. Yes, there is reason. The people receiving the questionnaire might not be representative of the population. b. No, there is no reason. It is unlikely that there are any confounding variables in the study c. No, there is no reason. The goal of the study is clear. d. Yes, there is reason. Self-reporting is often not accurate. e. No, there is no reason. There is no bias in the study 1. Yes, there is reason. The wording of the question might produce inaccurate or dishonest responses,
3. A psychology professor wants to know if stress in his statistics class is in anyway affected by a student's major and gender. Test to see if a student's gender and major affects their stress level in the statistics course. Psychology Other 17 11 -1 12 9 12 17 9 Male 10 10 13 13 13 4 14 6 EX² = 1294 EX² 811 25 19 15 14 11 20 20 12 Female 3 20 12 15 18 10 20 25 EX² = 2248 ΣΧ' = 2451 Solve for the appropriate test statistic(s).
1. A researcher is interested in choice and decisions. He looks at what people buyfor lunch in a university cafeteria. Which of the following best describes the data hecollects? a. He collects favorite lunch meal which is qualitative. He also collects data on how often each person buy that meal, which is also qualitative data. b. He collects how often participants buy their favorite meal, and this is a form of quantitative data.c. He asks participants to name their most frequently purchased meal, and this is qualitative data.d. He asks participants to tell him how many times a week they skip lunch because of their work, and this is qualitative data.
10. A supermarket conducted a survey of 1000 consumers. Their population was "adults who shop for groceries." Use specific examples to explain how the following biases could have had the following effects: a. How could sampling bias have made it seem like adults eat more bread than in reality? b. How could non-response bias have made it seem like adults eat less fruit than in reality? c. How could response bias have made it seem like adults eat more vegetables than in reality? d. How could measurement bias have made it seem like adults drink more coffee than in reality?
2. Ethiopian Television agency wants to know the proportion of TV owners in Addis Ababa who watch the agencies new program at least once a week. The station asked a group of 1000 TV owners in Addis Ababa if they watch the program at least once a week. a. Identify the individuals in the study. b. Identify the variable. c. Do the data comprise a sample? If so, what is the underlying population? d. Is the variable quantitative or qualitative? e. Identify a quantitative variable that might of interest
. In an upcoming decision to relocate, a new graduate’s decision on location choice comes down to housing prices. The following data are the monthly rental prices for a sample of unfurnished studio apartments in Concord, New Hampshire, and a sample of unfurnished studio apartments in Charleston, West Virginia: Concord$955 $980 $940 $975 $965 $990 $1,240 $1,120Charleston$725 $705 $695 $725 $690 $745 $575 $800a. For each set of data, compute the mean, median, mode, range, standard deviation, and coefficient of variation. b. What conclusions can you draw about unfurnished studio apartments renting in Concord versus Charleston? Compare and contrast.