Matching
Q: Which of the following words best match this definition: A chart containing
rectangles (“bars”) in which the length of each bar represents the count, amount, or percentage of responses in each category.
1. A Pie Chart
2. A Venn Diagram
3. A Bar Chart
4. A Rectangle Chart
3. A Bar Chart
Please define the term “variable”.
1. The amount of dispersion, or “spread”, in the data
2. A Characteristic of an item or an individual that will be analyzed using statistics
3. Something with different varieties
4. None of the above
2. A Characteristic of an item or an individual that will be analyzed using statistics
Q: The difference between the largest and smallest values in a set of data is called ______.
Height
Sum
Spectrum
Range
4. Range
Mode is the average point of a set of data.
False. Mode is the value in a set of data that appears most frequently.
Q:What is the name of the textbook?
A: Even You Can Learn Statistics and Analytics: An Easy to Understand Guide to Statistics and Analytics
Q: Which of the following words best match this definition: Intersection of a row and a column in a two-way cross-classification table.
1. Cell
2. Excel
3. Table
4. Box
1. Cell
Please define the term “slope”
1. A ski hill
2. A slant
3. The change in Y per unit change in X
4. The change in X per unit change in Y
3. The change in Y per unit change in X
Q: The median is the __________ in a set of data that has been ordered from lowest to highest value.
Middle value
Average point
Highest value
Lowest value
1. Middle value
Hypothesis testing is the methods used to make inferences about the hypothesized values of population parameters using sample statistics.
True
Q: MATCHING - Which word best matches this definition: Data available in print or in electronic form, including data found on Internet websites.
1. Published Sources
2. Statistical Sources
3. Primary Sources
4. Secondary Sources
1. Published Sources
Q: Which of the following words best match this definition: A sampling process that takes into consideration the chance that each item will be selected.
1. Chance Sampling
2. Systematic Sampling
3. Cluster Sampling
4. Probability Sampling
4. Probability Sampling
Please define the term “survey”.
*Hint* Think purpose and number of people
A data collection method that uses questionnaires or other approaches to gather responses from a set of participants.
Q: The region of rejection consists of the values of the test statistic that are unlikely to occur if the null _________ is true.
1. Region
2. Guess
3. Hypothesis
4. Value
3. Hypothesis
Independent variable is the variable to be predicted in a regression analysis. Also known as the response variable.
False. Independent variable is the variable used to predict the dependent or response variable in a regression analysis. Also known as the explanatory variable.
Q: TRUE OR FALSE: Coefficient of correlation measures the proportion of variation in the dependent variable Y that is explained by the independent variable X in the regression model.
A: False, that definition is for coefficient of determination. Coefficient of correlation - measures the strength of the linear relationship between two variables.
Q: Which of the following words best match this definition: A distribution to find the probability of the number of occurrences in an area of opportunity.
1. Poisson Distribution
2. Division Distribution
3. Probability Distribution
4. Opportunity Distribution
1. Poisson Distribution
Please define the term “Big Data”
*Hint* It is a form of data collection
High volume, high velocity or high variety collections of data that require innovative forms of information processing for enhanced insight and decision making.
Q: Probability sampling is a __________ process that takes into consideration the chance that each item will be selected.
1. Gathering
2. Sampling
3. Probability
4. Corrective
2. Sampling
Q: Standard deviation is the measure of variation around the median of a set of data.
A: False. Standard deviation is the measure of variation around the mean of a set of data.
Q: FILL IN THE BLANK: Classification tree—The predictive analytics method that splits _________ into groups based on the values of ___________ variables to predict a categorical __________variable.
1. Coefficient, quantitative, qualitative
2. Coefficient, qualitative, quantitative
3. Data, independent, dependent
4. Data, dependent, independent
3. Data, independent, dependent
Q: Which of the following words best match this definition: Measures the difference between each value and the mean of its own group and sums the squares of these differences over all groups.
1. Sum of squares total
2. Sum of squares within groups
3. Sum of squares among groups
4. Sum of squares values
2. Sum of squares within groups
Please define the term “frequency distribution”
A table of grouped numerical data in which the names of each group are listed in the first column and the percentages in each group are listed in the second column.
Q: Predictive analytics are methods that identify what is likely to occur in the near future and find relationships in data that may not be readily apparent using _________ analytics.
1. Descriptive
2. Exploratory
3. Casual
4. Correlative
1. Descriptive
Q: Chi-square (x^2) distribution is used to test relationships in two-way cross-classification tables.
True
What is the difference between “statistic” and “statistics”?
Statistic—A numerical measure that describes a characteristic of a sample.
Statistics—The branch of mathematics that consists of methods of processing and analyzing data to better support rational decision-making processes.