Sampling Methods
Using a number generator to select 10 random people that live in Middlesex County
What is SRS?
x bar represents
What is the sample mean?
or What is the point estimate
A histogram that represents alot of low scores
What is right skewed?
The mean weight of dogs is 41 pounds, interpret this
What is " when weighing lots and lots of dogs, the average weight is 41 pounds"
Why and How do you check for large enough sample for a means problem?
What is "To determine if dist is approx normal
Use CLT n>30"
Grouping students by grade level, then selecting 2 from each grade level
What is stratified?
Mu represents
What is the Population mean?
A display that show gaps but no actual data
What is a histogram?
The standard deviation of dogs' weights is 15 pounds, interpret this
What is " On average dogs' weights vary from the mean by 15 pounds" ?
Why and How do you check large enough counts for a proportions problem?
What " To see if distr is approx normal
np > 10 and n(1-p) > 10" ?
Looking at all the schools in Virginia, then randomly selecting 5 schools and talking to every student in those schools
What is Cluster sample ?
P hat represent
What is the sample proportion?
Here are the IQ test scores of 10 randomly chosen fifth-grade students: 145 139 126 122 125 130 96 110 118 118 To make a stemplot of these scores, you would use as stems
What is 0 and1?
Interpret resistance using the situation
In a graph that is skewed right we know that the mean....the median...
What is " The mean will be higher than the median since the median is more resistant to the high values" ?
What is the check for the standard deviation calculation?
What is " Independence - sample size is less than 10% of the population" ?
Taking a roster of all MHS students then selecting every 12th student to talk to
What is "Stratified"?
Mu p hat represents
What is the mean of the sampling distribution of proportions
A medical researcher collects health data on many women in each of several countries. One of the variables measured for each woman in the study is her weight in pounds. The following list gives the five-number summary for the weights of adult women in one of the countries. Country A: 92, 110, 120, 160, 240 About what percent of Country A women weigh between 110 and 240 pounds?
What is 75%
When asked to interpret or describe a graph what is expected?
What is SOCS G ? shape, outlier center, spread and Gap in context
When calculating a probability and the calculator gives you an answer of 4.879 what should you check for?
What is "Since probability is between 0-1, check for scientific notation - or an error"