The number of times an outcome occurs in a set of trial that are actually performed.
What is Empirical Probability
100
Two variables measured about an individual.
What is Bivariate Data
100
Entire group you are interested in finding out about.
What is Population
100
A formal procedure for comparing observed data with a claim whose truth we want to assess.
What is a Significance Test
100
The systematic favoring of certain outcomes due to flawed sample selection, poor question wording, under coverage, nonresponse, etc.
What is Bias
200
The proportion of times the outcome would occur in a very long series of repetitions.
What is Theoretical Probability
200
A company produces packets of soap powder labeled "Giant Size 32 Ounces." The actual weight of soap powder in a box has a normal distribution with a mean of 33 oz. and a standard deviation of 0.8 oz. What proportion of packets are underweight?
What is 0.106
200
A table that assigns numbers to individuals (all with same # of digits)
What is a Random Digit Table
200
We reject the null hypothesis when the null hypothesis is true
What is Type 1 Error
200
A sample taken in such a way that every set of "n" individuals has an equal chance to be the sample actually selected.
What is SRS
300
A fair coin is to be flipped 5 times. The first 4 flips land "tails" up. What is the probability of "tails" on the next (5th) flip of this coin?
What is 1/2
300
Suppose that the distribution of math SAT scores from your state this year normally distributed with mean 480 and a standard deviation 100 for males and mean 440 and standard deviation 120 for females. If someone who scores 780 or higher on math SAT can be considered a genius, what is the proportion of geniuses among the male SAT takers?
What is 0.14%
300
A variable that helps explain or influences changes in a response variable.
What is an Explanatory Variable
300
The equation for a test statistic
What is test statistic= statistic-parameter/standard deviation of statistics.
300
Measures the difference between the actual (observed) y-value in a scatterplot and the y-value that is predicted by the LSRL using its corresponding x value.
What is Residual
400
Let X represent a random variable whose distribution is normal, with a mean of 100 and a standard deviation of 10. Which of the following is equivalent to P(X>115)?
What is P(X<85)
400
The number of standard deviation away from the mean.
What is z-score
400
Individuals randomly assigned to treatment groups, no grouping by common characteristics or lurking variables.
What is a Completely Randomized Design
400
The four steps for a significance tests
What is State, Plan, Do, Conclude
400
Two mutually exclusive events whose union is the sample space.
What is Complementary Events
500
In the board game Monopoly, one way to get out of jail is to roll doubles. Suppose that a player has to stay in jail until he or she rolls doubles. The probability of rolling doubles is 1/6. Find the probability that it takes exactly three rolls to get out of jail.
What is 0.116
500
Heights of fourth graders are normally distributed with a mean of 52 inches and a standard deviation of 3.5 inches. Ten percent of fourth graders should have a height below what number?
What is 47.5 inches
500
Putting individuals with similar characteristics into groups and then randomly assigning them to treatments and compare within that group. This helps to control lurking variables.
What is a Randomized Block Design
500
We fail to reject the null hypothesis when the null hypothesis is false
What is a Type II Error
500
A form of blocking in which each subject receives both treatments in a random order or the subjects are matched in pairs as closely as possible and one subject in each pair receives each treatment, determined at random.