Identifying Sample Method
Konnor and Landon wanted to survey students to see what they thought about the Philadelphia Eagles. They decided to ask the first 100 students that enter the cafeteria during Delsea One. What is the sampling method for this example?
What is convenience sample?
The SGA asked the students to fill out a survey in the emails about how they feel about the food served at lunch time. What bias is present in this scenario?
What is voluntary response bias?
Delsea Senior Class Officers surveys 80 students and collects their opinions on if Delsea should implement block scheduling. What is the sample in this study?
What is the 80 Delsea students?
What is Ms.Happ's favorite dessert?
What is ice cream?
For a statistics project, Isaiah and Alli decided to ask every 12th person who walked through the gym doors at school whether they like the Delsea One schedule. What sample method is this?
What is systematic random sample?
The SGA asked the students to fill out a survey in the emails about how they feel about the food served at lunch time. Only 230 out of 1100 students at the school answered the survey. What bias is present in this scenario?
Delsea randomly selected 20 teachers out of the 95 teachers at the school to find out which technology resource it's teachers feel is the most effective. What is the population in this sample?
What is the 95 Delsea teachers?
What is the first five digits of pi after the decimal?
Hint 3. _ _ _ _ _
What is 3.14159?
Nick and Gio wanted to determine what is Delsea student's favorite ice cream flavor. They decide to number every student between 0001 to 1100. Using a table of random they selected 35 students to be apart of the sample. What is the sampling method for this example?
What is simple random sample?
What is undercoverage bias?
DECA wanted to survey 5 unique random students in Ms. Happ's class. They assigned every student a number between 01 to 30. What are the numbers of the 5 selected students from the line of digits below?
77427 17977 09394 40148 40916 36081 78142 56602
What is the z-score formula?
What is (x-mean)/standard deviation?
Gianna and Sophie wanted to see what each grade thought of the homecoming pep rally. The decided to survey 75 freshman, 75 sophomores, 75 juniors and 75 seniors. What is the sampling method for this example?
What is stratified random sampling?
During covid, a local school district allowed students to chose on the following options for education that year: in-person, virtually, or a hybrid option. The school wanted to see how the students were feeling about their education. They sent an email out to the virtual students. What is the bias in this scenario?
What is undercoverage bias?
A study showed that one factor that strongly correlates with student academic success is the number of books that the family has in their home. Researchers randomly selected 100 students and measured their academic success as well as counted the number of books their family has in their home. Is this an observational study or experiment?
What is an observational study?
How many times can a sheet of paper be folded in half?
What is seven times?
Administration wants to gather data for the Renaissance Club. They randomly assign each junior homeroom a number and randomly select two homerooms to survey all students. What is the sampling method?
What is cluster random sample?
The manager at the local Wawa chose 15 random employees to personally ask if they feel the manager is doing a solid job at leading the store. What is the bias present in this scenario?
What is response bias?
Do homes with metal roofs get worse cell service than homes with shingled roofs? Ben and Jerry are neighbors and own an ice cream business together. Ben has a metal roof on his home and Jerry has a shingled roof. Ben and Jerry select a random sample of 50 employees. They randomly assign them to come to a party at either Ben’s house or Jerry’s house. When they arrive Ben and Jerry ask them about their signal strength. Was this an observational study or an experiment?
What is an experiment?
What is our linear regression formula?
What is y-hat = a+bx ?