Chapter 1-4 Terms
Define what a median is.
What is the middle value of a set of numbers.
Define what a Point estimate is.
What is a single value estimate of a parameter.
A student with a percentile score of 94 would have what z score?
Round your answer to 2 decimal places.
What is 1.56
Which of the following statements about probability is not true?
A probability is a number between 0 and 1.
The law of large numbers predicts probabilities in the long run.
Probability describes the proportion of times something occurs in the long run.
Simulations are used to calculate probabilities for random events.
Simulations are used to estimate probabilities.
What is simulations are used to calculate probabilities for random events.
Log27 1/3
-1/3
Define what the mean is.
What is The center value of a set of numbers.
Define what probability is.
What is the likelihood of something happening based on facts.
Duke can solve the puzzle in roughly 128 seconds, which is the 14th percentile.
The average time for other dogs to solve the puzzle is 201 seconds.
Calculate the standard deviation. Round your answer to 2 decimal places.
what is 67.59
What is true concerning "mutually exclusive" and "independent events"?
What is mutually exclusive events are never independent
What is a correlation coefficient?
What is a number between -1 and 1 that tells you the strength and direction of a relationship between variables.
Define what a Z score is.
What is a statistical measure that quantifies the distance between a data point and the mean of a dataset.
Define what the margin of error is.
What is represents the range of uncertainty or variability around an estimate.
Sometimes we see two things happen and we wonder if they are related or if there was some kind of coincidence or randomness going on. Four situations are given below. Which do you think is a situation involving two categorical variables which might be related?
The lunch period a high school student eats and the student's class right after lunch
The number of hours a student studies for a test and their grade on the test.
The number of hours a high school student sleeps and the number of times the student is tardy to first period.
The SAT score of a high school student and the student's ACT score.
What is The lunch period a high school student eats and the student's class right after lunch.
Calculate the standard deviation of the sampling distribution of sample proportions given a sample size of n = 43 and a population proportion of p = 0.987
What is 0.0173
What is the acronym for BINS?
B - Binary
I - Independent
N - Number
S - Same probability
Define what Standard Deviation is.
What is measure of the amount of variation of a random variable.
Define what a T- Score is.
What is the test statistic used in t-tests and regression tests.
Taking a simple random sample has 3 steps. Identify these steps in the proper order.
What is Label, Randonmize, Select.
A spinner consists of 8 equally sized sections. Each section is labeled with a different number from 1 to 8. If the spinner is spun five times and the result on each spin is independent, what is the probability that the number 3 will come up on exactly one of the spins?
Write your answer as a decimal, round to 4 decimal places.
What is 0.3663
What is the Large Count Condition?
what is n>10
Define what a Least Squares Regression Line is.
What is a model that shows the relationship between variables in a scatterplot.
Define what Random Sampling is.
What is an unbiased representation of the total population.
What is the main difference between an observational study and an experiment?
What is In an experiment, some type of treatment is imposed upon subjects, while in an observational study, no treatments are imposed.
Calculate the minimum sample size required to obtain a margin of error of 0.05 when calculating a 95% confidence interval for a sample proportion of 0.54.
What is 380
Which variable gets transformed when linearizing an exponential model?
What is the Response Variable.