Stat 1.1-1.2
What is the difference between a parameter and a statistic? A parameter is an aspect of an individual subject or object being measured. A statistic is a numerical measurement describing data from a population. A parameter is a numerical measurement describing data from a population. A statistic is a numerical measurement describing data from a sample. A parameter is a numerical measurement describing data from a population. A statistic is an aspect of an individual subject or object being measured. A parameter is a numerical measurement describing data from a sample. A statistic is an aspect of an individual subject or object being measured. A parameter is a numerical measurement describing data from a sample. A statistic is a numerical measurement describing data from a population. A parameter is an aspect of an individual subject or object being measured. A statistic is a numerical measurement describing data from a sample.
A parameter is an aspect of an individual subject or object being measured. A statistic is a numerical measurement describing data from a sample.
In a statistical study what is the difference between an individual and a variable? An individual is a member of the population of interest. A variable is an aspect of an individual subject or object being measured. An individual is a member of the population of interest. A variable is a numerical measurement describing data from a sample. An individual is the population of interest. A variable is a numerical measurement describing data from a population. An individual is the population of interest. A variable is an aspect of an individual subject or object being measured. An individual is a member of the population of interest. A variable is a numerical measurement describing data from a population
An individual is a member of the population of interest. A variable is an aspect of an individual subject or object being measured.
If there are three different samples of the same size from a set population, is it possible to get three different values for the same statistic? Data from samples never vary from sample to sample, and so corresponding sample statistics may vary from sample to sample. Data from samples never vary from sample to sample, and so corresponding sample statistics never vary from sample to sample. Data from samples may vary from sample to sample, and so corresponding sample statistics may vary from sample to sample. Data from samples may vary from sample to sample, and so corresponding sample statistics never vary from sample to sample.
Data from samples may vary from sample to sample, and so corresponding sample statistics never vary from sample to sample.
Randomly select some MMH facilities from each of five geographic regions, and then include all the patients on the discharge lists of the selected hospitals. simple random sample stratified sample systematic sample cluster sample convenience sample
cluster sample
Use postal ZIP Codes to divide the state into regions. Pick a random sample of 10 ZIP Code areas and then include all the businesses in each selected ZIP Code area. simple random sample stratified sample systematic sample cluster sample convenience sample
cluster sample
Instruct each MMH facility to survey 10 discharged patients this week and send in the results.
convenience sample
Send a team of five research assistants to Bishop Street in downtown Honolulu. Let each assistant select a block or building and interview an employee from each business found. Each researcher can have the rest of the day off after getting responses from 20 different businesses. simple random sample stratified sample systematic sample cluster sample convenience sample
convenience sample
Temperature (°F) in CEO's private office
interval
Temperature of water
interval
Time of first class
interval
Time of return home
interval
What is the average miles per gallon (mpg) for all new hybrid small cars? Using Consumer Reports, a random sample of such vehicles gave an average of 35.7 mpg. Identify the variable. Is the variable quantitative or qualitative? What is the implied population?
miles per gallon quantitative all new hybrid small cars
For a set population, does a parameter ever change?
never
Color of product packaging
nominal
Major field of study
nominal
Names of new products
nominal
Species of fish caught: perch, bass, pike, trout
nominal
The archaeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high kings of Ireland. Because of it's archaeological importance, Tara has received extensive study (Reference: Tara: An Archaeological Survey by Conor Newman, Royal Irish Academy, Dublin). Suppose an archaeologist wants to estimate the density of ferromagnetic artifacts in the Tara region. For this purpose, a random sample of 55 plots, each of size 100 square meters, is used. The number of ferromagnetic artifacts for each plot is determined. Identify the variable. Is the variable quantitative or qualitative? What is the implied population?
number of ferromagnetic artifacts per 100 square meters quantitative the entire Tara region
Course evaluation scale: poor, acceptable, good
ordinal
Guidebook rating of fishing area: poor, fair, good
ordinal
Salesperson's performance: below average, average, above average.
ordinal
Are data at the nominal level of measurement quantitative or qualitative? neither quantitative nor qualitative both quantitative and qualitative qualitative quantitative
qualitative
Age of student
ratio
Cost of rod and reel
ratio
Gross income for each of the past 5 years
ratio
Length of time to complete an exam
ratio
Number of fish caught
ratio
Price of company's stock
ratio
Score on last exam (based on 100 possible points)
ratio
Assign each business in the Island Business Directory a number, and then use a random-number table to select the businesses to be included in the sample. simple random sample stratified sample systematic sample cluster sample convenience sample
simple random sample
Obtain lists of patients discharged from all MMH facilities. Number these patients, and then use a random-number table to obtain the sample. simple random sample stratified sample systematic sample cluster sample convenience sample
simple random sample
Group the businesses according to type: medical, shipping, retail, manufacturing, financial, construction, restaurant, hotel, tourism, other. Then select a random sample of 10 businesses from each business type simple random sample stratified sample systematic sample cluster sample convenience sample
stratified sample
Obtain a list of patients discharged from all MMH facilities. Divide the patients according to length of hospital stay (2 days or less, 3-7 days, 8-14 days, more than 14 days). Draw simple random samples from each group. simple random sample stratified sample systematic sample cluster sample convenience sample
stratified sample
At the beginning of the year, instruct each MMH facility to survey every 500th patient discharged. simple random sample stratified sample systematic sample cluster sample convenience sample
systemic sample
Use the Island Business Directory. Number all the businesses. Select a starting place at random, and then use every 50th business listed until you have 100 businesses. simple random sample stratified sample systematic sample cluster sample convenience sample
systemic sample