Statistical Analysis Module 1 Exam

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Ashworth College *

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260

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Statistics

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Feb 20, 2024

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[01] Module 1 Quiz - Results Attempt 1 of 2 Written Jan 28, 2024 2:38 PM - Jan 28, 2024 3:01 PM Your quiz has been submitted successfully. mpt Score 90 / 100 - 90 % rall Grade (Highest Attempt) 90 / 100 - 90 % stion 1 5 / 5 points Determine which of the following describes quantitative data. i). the name of a chemical sample ii). the mass of a chemical sample iii). the color of a chemical sample Question options: ii only i and ii only i, ii, and iii i only on 5 / poi You ask your friends who they plan to vote for in the next congressional election. Based on their responses, you conclude that the candidate you favor cannot lose! This is most likely an example of ... Question options: voluntary response bias self-interest bias randomized sampling sampling bias on 5 / poi

Which one of the following data are discrete? Question options: the average height of players on the University of Connecticut's women's basketball team the average preseason ranking of the University of Connecticut's women's basketball team over the past 10 years the height of the tallest player on Duke University's men's basketball team the pre-season ranking of Duke University's men's basketball team on 5 / poi Which of the following is the best description of a double-blind experiment? Question options: an experiment in which neither the investigators nor the subjects know how the treatments have been assigned an experiment in which neither the investigators nor the subjects know the others' names an experiment in which both the investigators and the subjects are hidden from the others' views an experiment in which the subjects are blindfolded so they cannot see which treatment is applied to them on 5 / poi The names of all 126 students in a professor's class are written on identical slips of paper, and the slips are placed into a large glass jar. Then, the professor selects 14 random slips from the jar. Identify the kind of sample that is being used. Question options: systematic sample sample of convenience cluster sample simple random sample on 5 / poi When rolling two six-sided dice, your total roll ranges from 2 (double ones) to 12 (double sixes).Characterize the nature of the roll total.

Question options: qualitative and discrete qualitative and continuous quantitative and continuous quantitative and discrete on 5 / poi A(n) _______________ makes it difficult to determine whether an experimental outcome is due to the applied treatment. Question options: uncooperative subject perplexer confounder error on 5 / poi Which of the following is the best description of a randomized experiment? Question options: an experiment in which the experimental units are selected at random an experiment in which the treatments are assigned randomly to experimental units an experiment in which the investigators are chosen at random an experiment in which the outcomes are random on 5 / poi Determine which of the following describes quantitative data. i). the length of an object in feet ii). the speed of an object in meters per second iii). the number of objects that are blue Question options:

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i and ii only iii only i, ii, and iii i only on 5 / poi In an experiment, the ______________ is what is measured on each experimental unit. Question options: outcome treatment category subject on 5 / poi Which one of the following data are continuous? Question options: the number of representatives of each species in the park the number of species of trees in a park the rankings of the trees, from most numerous to least numerous the average height of a sample of trees on 5 / poi A middle school student passes out leaflets to the adults at a school function. The leaflets ask the recipient to indicate whether they believe in anthropogenic global warming. The bottom of the leaflet indicates that the completed leaflet should be returned to the student. Identify the kind of sample that is being used. Question options: sample of convenience

systematic sample cluster sample stratified sample on 5 / poi A radio talk show invites people to call in and state whether or not they think that sexual harassment in the work place is a common problem. Question options: Social acceptability Self-interest Voluntary response Sampling on 0 / poi A pollster randomly samples 145 Democrats, 154 Republicans and 19 Independents (all registered voters) in Metro City and asks each poll participant which mayoral candidate he or she prefers. Identify the kind of sample that the pollster is using. Question options: stratified sample voluntary response sample cluster sample sample of convenience on 5 / poi A small brew pub sent out questionnaires to a simple random sample of 250 customers asking whether they would like the brewery to include an imperial stout in their regular offerings. Of the 250 questionnaires, 12 were returned and 10 of those were in favor of including the stout. Specify the type of bias involved. Question options:

Self-interest Voluntary response Nonresponse Sampling on 0 / poi In a survey of 1000 teenagers, 23% of them said they use tobacco products. Is this an example of statistic or a parameter? Question options: Statistic Parameter on 5 / poi In an experiment, subjects are put into two categories according to sex, and then each subject is randomly assigned a treatment . This is an example of... Question options: observational studies confounding randomized blocking gender bias on 5 / poi In a randomized experiment, if there are large differences in outcomes among the treatment groups, we can conclude that the differences are due to _____________________. Question options: random luck deliberate data manipulation the treatments

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experimental error on 5 / poi Choose the answer below that best completes the following statement. A ________ is a number that describes a population. Question options: statistic summary parameter sample on 5 / poi Which of the following sample types should you always regard as unreliable? Question options: cluster samples simple random samples voluntary response samples stratified samples Done

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