Bias
Biased or Not...
Don't you agree that 16 year olds should be able to vote since many are responsible and informed?
Biased
You are surveying peoples preference between brands of markers. The categories for the brands of markers is what type of level of measurement?
Nominal
Brands: Crayola, Sharpie, Bic..
This method of sampling involves assigning every member of the population a number, and including every nth member after a random starting point.
Systematic
A chain restaurant wants to gather data on people's opinions of their new meatless burger. What method of data collection should they use?
Survey
The __________________ is the entire group to be studied.
Population
Biased or Not...
What is your favorite vacation destination?
Not
List the Levels of Measurement in order from the one offering 'least' information to 'most' information. Describe why…
Nominal
Ordinal
Interval
Ratio
Management of a large hospital chain across the US wishes to survey discharged patients about patient satisfaction...What type of sampling method is used:
Randomly select some hospitals in the chain from five geographic regions and include all their discharged patients in the sample.
Cluster Sampling
A wildlife group wants to determine the distribution of different species of bird living on Cape Cod (Number of Gulls compared to number of blue jays compared to the number of ospreys, etc.)
What method of data collection should they use?
Observational Study
The ___________ ___________ is defined as a phenomenon in which some people experience a benefit after the administration of an inactive substance or fake treatment.
Placebo Effect
Biased or Not...
Do you want your kids to receive a faulty education by having their day shortened?
Biased
You are examining the high temperature at an Aspen ski resort. What Level of Measurement is the temperature?
Interval.
Ex: 32 degrees Fahrenheit; 0 degrees Fahrenheit
Management of a large hospital chain across the US wishes to survey discharged patients about patient satisfaction...What type of sampling method is used:
List of patients discharged are divided according to length of stay categories (2 days, 3-7 days, 8-14 days, 14 or more days). A simple random sample is drawn from EACH group.
Stratified
A research group wants to see what would happen if the cooling systems for a nuclear reactor were disabled. What method of data collection should they use?
Simulation
Identify the type of sampling used if every 100th hamburger manufactured is checked to determine its fat content.
Systematic Sampling
Restate this biased question as an unbiased question...
Due to disappearing resources, don't you agree that a law should require people to recycle?
Should people be required to recycle?
You are studying the fuel use in miles per gallon of a passenger vehicle. What Level of Measurement is the miles per gallon?
Ratio
Example: 0 mpg, 20 mpg, 27 mpg...
Management of a large hospital chain across the US wishes to survey discharged patients about patient satisfaction...What type of sampling method is used:
At the beginning of the year, instruct each hospital in the chain to sample every 200th patient discharged.
Systematic Sampling
A pharmaceutical company wants to test the effectiveness of a new headache medication. What method of data collection should they use?
Experiment
What is the group that receives no treatment, or receives a placebo in an experiment called?
Control Group
Restate this biased question as an unbiased question...
Due to disappearing resources, don't you agree that a law should require people to recycle?
Should people be required to recycle?
You are evaluating the highest educational degree your study participants have achieved. Level of education is what Level of Measurement?
Ordinal.
Management of a large hospital chain across the US wishes to survey discharged patients about patient satisfaction...
* How can the chain select a Convenience Sample?
Ex.
Have each hospital in the chain survey the next 10 discharged patients and submit the results
A marine biologist wants to track what hours of the day different species of fish are most active. What method of data collection should they use?
Observational Study
Identify the following variables as Qualitative or Quantitative:
1) Phone Numbers
2) Favorite Sodas
3) Weight of different cars in pounds
1) qualitative
2) qualitative
3) quantitative