Sampling Methods
I'm doing my statistics project on what BHS students are buying for lunch. Since I wanted a quesadilla today, I recorded the orders of the first 20 BHS students who buy lunch at Chipotle.
What sampling method did I use?
What is convenience sample?
Suppose that the number of tiktoks watched in a day by a student in Ms. Albrecht's class is approximately normally distributed with a mean of 100 tiktoks and a standard deviation of 40 tiktoks.
What percentage of students watch between 60 and 180 tiktoks in a day?
What is 81.5%?
Name 3 qualities of a normal distribution.
What is mean=median=mode, symmetric, unimodal, 2 tails?
Draw a sketch of the probability distribution and find the probability:
P(-2<=Z<=1.5)
show whiteboards
Ms. Henriques goes to school here.
What is UC Berkeley?
My group is doing our statistics project on what BHS students are buying for lunch. We walk through downtown Berkeley and record the orders of BHS students at every 4th restaurant.
What sampling method are we using?
What is a systematic random sample?
Suppose that the number of tiktoks watched in a day by a student in Ms. Albrecht's class is approximately normally distributed with a mean of 100 tiktoks and a standard deviation of 40 tiktoks.
What percentage of students watch between 0 and 50 tiktoks in a day?
What is 9.94%?
We use this to label one standard deviation away from the mean on our normal curve.
What is the point of inflection?
Suppose that the number of Takis in a bag is approximately normally distributed with a mean of 42 Takis and a standard deviation of 5 Takis.
What is the probability that my bag contains between 40 and 50 Takis?
What is 60.06%?
If teenagers are recommended to get 8 hours of sleep, how many more hours per night should the average student in this period sleep?
?
My group is doing our statistics project on what BHS students are buying for lunch. We randomly select 4 restaurants in downtown Berkeley and record what every BHS student ordered there.
What sampling method are we using?
What is cluster random sampling method?
Suppose that the number of tiktoks watched in a day by students in Ms. Albrecht's class is approximately normally distributed with a mean of 100 tiktoks and a standard deviation of 40 tiktoks.
If I'm in the 99th percentile (I watch more tiktoks that 99% of students), how many tiktoks do I watch in a day?
What is 193 tiktoks?
Draw a normal curve with a mean of 5 and a standard deviation of 1. On top of this, draw a normal curve with a mean of 5 and a standard deviation of 2. Label both graphs with the mean and 2 standard deviations on each curve.
show whiteboards
Suppose that the number of Takis in a bag is approximately normally distributed with a mean of 42 Takis and a standard deviation of 5 Takis.
I'm convinced my Takis bag contains way less than normal. The Taki company accepts refunds if your bag is smaller than 99.4% of all other bags. What is the maximum number of Takis my bag would need to qualify for a refund?
What is 31 Takis?
How many small learning communities are represented in this class?
?