Graphs
Study Designs
Probability
Inference
Conclusions
100
This is a graph that could be used to display the distribution of favorite subject at P.K. Yonge.
What is a bar graph? OR What is a pie chart?
100
This is a way to choose n individuals from the population in such a way that every set of n individuals has an equal chance to be in the sample.
What is a simple random sample? OR What is an SRS?
100
This term describes two events that have no outcomes in common and so can never occur together.
What is mutually exclusive?
100
An inference procedure that can be used to test whether the average SAT score at P.K. Yonge is greater than 1550 (based on a sample of 30 students who recently took the SAT).
What is a one-sample t test?
100
This is the conclusion reached when the p-value is less than the significance level alpha.
What is reject the null hypothesis?
200
This a graph that could be used to represent the heights (in inches) of 10000 American 5th graders.
What is a histogram?
200
This design issue is often caused by participants in a study trying to please the researchers with their answers rather than telling the truth.
What is response bias?
200
This term describes A and B when the following equations are true: P(A|B)=P(A), P(B|A)=P(B), P(A and B)=P(A)*P(B)
What is independent?
200
In a study of 3000 randomly selected teenagers in 1988-1994, 15% showed some hearing loss. In a similar study of 1800 teenagers in 2005-2006, 19.5% showed some hearing loss. Do these data provide convincing evidence that the proportion of all teens with hearing loss has increase? This inference procedure can help you decide.
What is a two proportion z test? OR What is a two sample z test?
200
This is term means that the observed results would be unlikely to occur by chance alone if the null hypothesis were true.
What is statistically significant?
300
This is a graph that could be used to display the relationship between weight (in pounds) and height (in inches).
What is a scatterplot?
300
This occurs when two variables are associated in such a way that their effect on a response variable cannot be distinguished from each other. For example, one treatment was applied to plants in the sun and a different treatment was applied to plants in the shade.
What is confounding?
300
This term describes A and B when the following equation is true: P(A)=1-P(B)
What is complement?
300
You want to estimate the slope of the line relating SAT score to GPA for a sample of incoming freshmen at UF. This calculator function can be used to find the critical value you'll need.
What is invT?
300
This is the study design necessary to draw conclusions about cause-and-effect.
What is a randomized experiment?
400
This is a graph that could be used to display the relationship between class (freshman, sophomore, junior, or senior) and support for a new school policy (support, do not support, undecided).
What is a segmented bar graph? OR what is a side-by-side bar graph?
400
Example: To estimate national attitudes during this election season, a simple random sample was taken from each state in the US (with sample size proportional to that state's population).
What is a stratified random sample?
400
A type of random variable. Example: X = the number of trials it takes to get doubles when you roll a set of two dice
What is geometric?
400
To determine whether standing pulse rates are higher than sitting pulse rates, each student in the class measured their heart rates in both positions. This inference procedure can be used to decide if the difference between sitting and standing pulse rates is statistically significant?
What is a one-sample t-test (for paired data)?
400
This type of error often occurs when the sample size is small. The possibility of this error is the reason we cannot accept the null hypothesis.
What is a type II error?
500
This is a graph that describes the overall pattern of a distribution. The most common example: Normal
What is a density curve?
500
Example: To determine whether standing pulse rates are higher than sitting pulse rates, each student in the class measured their heart rates in both positions. The order of measurements (sitting and standing) was randomized.
What is a matched pairs design?
500
A calculator function. It can be used to calculate the probability that you will flip at least 8 heads in a set of 10 flips of a fair coin.
What is binomcdf?
500
An SRS of 50 students is selected. Each student is asked about their class (freshman, sophomore, junior, or senior) and support for a new school policy (support, do not support, undecided). This inference procedure can help you decide if the relationship between class and support the the new policy is statistically significant.
What is a chi-square test of association? OR What is a chi-square test?
500
You are a statistician and your client has brought you data collected from a voluntary online survey. They want to use this data to estimate a population parameter (confidence interval). This is what you can do to help them.
What is nothing?
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