SOLUTION: Statistics students participated in an experiment to test their ability to determine when 1 minute (or 60 seconds) has passed. The results are given below in seconds.

Question 1105643: Statistics students participated in an experiment to test their ability to determine when 1 minute (or 60 seconds) has passed. The results are given below in seconds. Find the range, variance, and standard deviation for the given sample data. Identify one reason why the standard deviation from this sample might not be a good estimate of the standard deviation for the population of adults.
51,53,60,69,56
I KNOW THE RANGE IS 18 SECONDS
BUT NEED HELP WITH SAMPLE VARIANCE

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Mean is 57.8
the variance is the sum of squares of the differences divided by 4, calling this a sample and not a population
-6.8^2+-4.8^2+2.2^2+11.2^2-1.8^2=202.8/4=50.7; sd is sqrt of that.
Reasons why this sd might not be a good estimate:
1. Small sample size
2. Youth (likely), with different memory.
3. Students, so those without same education may not be the same.

RELATED QUESTIONS
Statistics students participated in an experiment to test their ability to determine... (answered by CubeyThePenguin)

Statistics students participated in an experiment to test their ability to determine when (answered by lynnlo)

Please help me In a study of pregnant women and their ability to correctly predict... (answered by Boreal)

Please please please can someone help me thank you so much please!!!!!!! In a study of (answered by Theo)

Determine whether the description corresponds to an observational study or an experiment. (answered by Boreal)

According to an insurance company, 30% of drivers aged 60-65 fail... (answered by stanbon)

Use technology to help you test the claim about the population mean,... (answered by oscargut)

Please help; I am having great difficulty with this one. Solve. (Use... (answered by Alan3354,jim_thompson5910)

Statistics Instruction: Apply the five steps of hypothesis-testing procedure to each... (answered by solver91311)

SOLUTION: Statistics students participated in an experiment to test their ability to determine when 1 minute&#8203; (or 60&#8203; seconds) has passed. The results are given below in seconds.

SOLUTION: Statistics students participated in an experiment to test their ability to determine when 1 minute (or 60 seconds) has passed. The results are given below in seconds.