Show:
Week 1
Week 2
Week 3
Week 4
Pot Luck
100
This is a science that deals with the collection, analysis, and interpretation of information or data.
What is statistics.
100
This number is the middle value of a distribution of numbers arranged from lowest to highest. If the number of data points in the distribution is even, it is calculated by adding the two middle values together and dividing by two.
What is median.
100
These random variables can assume a countable number (finite or infinite) of values.
What is a Discrete Random Variable.
100
This hypothesis represents the hypothesis that will be accepted unless the data provide convincing evidence that it is false. This hypothesis normally represents the "status quo."
What is the Null Hypothesis.
100
This variable is the so-called dependent variable in regression analysis. It is also called regressand, endogenous variable, response variable, measured variable depending on where you did your statistical training? What letter of the alphabet do we typically use to represent this value in regression analysis?
What is the letter "y."
200
This branch of statistics uses numerical and graphical methods to look for patterns, summarize, and to present the information in a set of data.
What is Descriptive Statistics
200
This way of describing data is like a bar chart except the categories are arranged by height in descending order.
What is a Pareto Diagram.
200
These random variables are different in that they can be measured.
What are continuous random variables.
200
This is a statistic computed from the information provided in the sample that the researcher uses to decide between the null and the alternative hypothesis.
What is the Test Statistic.
200
This variable answers the question, "How strong is the linear relationship between two variables." It is typically denoted "r" and has values that range from 1 to-1. It measures the degree of a association, however does not indicate a cause-effect relationship.
What is the coefficient of correlation.
300
This branch of statistics uses sample data to make to make estimates, decisions, predictions or other generalizations about a larger set of data.
What is Inferential Statistics.
300
This technique of data display assigns each observation into a range of numbers, or classes with defined intervals.
What is Frequency Distribution.
300
This handy summary measure of a population is equal to the weighted average of all possible values times their probability and is expressed as E(x).
What is the Expected Value of a Population.
300
This type of error occurs if the research rejects the null hypothesis in favor of the alternative hypothesis. Its probability of occurrence is denoted by the Greek symbol alpha
What is Type I Error.
300
When working with probabilities, the probabilities of the individual points will always sum to this number.
What is the number 1.
400
This kind of data are measurements that are recorded on a meaningful scale. This kind of data can be contrasted with Qualitative Data that are measurements that are NOT numerical in nature.
What is Quantitative Data.
400
This measure of central tendency and defined by the Greek symbol pronounced "mew" for a population and a capital X with a line over for a sample.
What is the mean.
400
This type of distribution is bell shaped, symmetrical, and its mean, median and mode are all equal.
What is the Normal Distribution.
400
If the calculated test statistic falls in this area in a one or two tail test, reject the null hypothesis and conclude that the alternative hypothesis Ha is true. State that you are rejecting Ho at the alpha level of significance. Provide the name of this particular region.
What is the Rejection Region.
400
This symbol is used after a number in forumulas to designate it as a factorial calculation.
What is !
500
This word describes a subset of the units of a population.
What is a sample.
500
This measure of central tendency is the square root of the variance and represented by an "s" when discussing a sample and a sigma when applied to a population.
What is Standard Deviation.
500
This is table, often colloquially referred to as the "z-table" which allows users to look up z values. The individual cells of the table represents probabilities.
What is Standard Normal Probability Table or Standard Normal Table.
500
This type of mathematical model hypothesizes exact relationships between two variables and does not allow for the likelihood of random error. It can be contrasted with probabilistic models which anticipate random error.
What is a deterministic model.
500
This value is calculated as one minus explained variation over total variation in the population. It is the square of the coefficient of determination and is a measure of the total sample variability around y that is explained by the relationship between y and x.
What is the coefficient of determination.