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Unit 3 - Descriptive Statistics
Test Description: Vocabulary Review
Instructions: Answer all questions to get your test result.
1) A relationship between measures of two types of quantities so that one is statistically dependent on the other.
A
Mean
B
Box Plot
C
Association
D
Interquartile Range
2) Often denoted by r, a number between -1 and +1 that measures the strength and direction of a linear relationship between the two types of quantities.
A
Standard Deviation
B
Medium
C
Histogram
D
Correlation Coefficient
3) The distance between the first quartile and the third quartile. The length of the interval that contains the middle 50% of data values.
A
Interquartile Range
B
Maximum
C
Domain
D
Minimum
4) A value in a data set that is greater than Q3 by a distance of 1.5 times the Inter Quartile Range or a value that is less than Q1 by a distance of 1.5 times the Inter Quartile Range.
A
2nd Quartile
B
Median
C
Outlier
D
Mean
5) Given a data set and linear equation used to model the data set, the actual value minus the predicted value. (Actual-Predicted)
A
Residual
B
Skew
C
Inter Quartile Range
D
Mode
6) Given a data set and linear equation used to model the data set, the graph of all ordered pairs determined as follows: The first entry of the ordered pair is the x-value of the data point, and the second entry is the residual of the data point.
A
Residual Plot
B
Interval
C
x-axis
D
Quartile
7) The square root of the sum of the squared distances the values are from the mean divided by (n-1). (from a numerical sample data set of n-values)
A
Sample Standard Deviation
B
Relative Frequency
C
Histogram
D
Mean
8) A distribution of data that is not symmetric with respect to its mean.
A
Mean
B
Skewed Data Distribution
C
Range
D
Median
9) The average of a data set. The sum of the values divided by the number of values.
A
Mean
B
Mode
C
Range
D
Median
10) A graphic representation of a distribution by a rectangle, the ends of which mark the maximum and minimum values, and in which the median and first and third quartiles are marked by lines parallel to the ends.
A
Box Plot
B
Pie Chart
C
Linear Regression
D
Histogram
11) Found by arranging all the values from lowest to highest and picking the middle one.
A
Median
B
Mode
C
Mean
D
Range
12) The equation representing the relation between selected values of one variable (x) and observed values of the other (y); it permits the prediction of the most probable values of y.
A
Correlation Coefficient
B
Variance
C
Linear Regression Equation
D
Residual
13) In a mathematical equation or relationship between two or more variables, any variable whose value determines that of others.
A
Dependent Variable
B
Y-intercept
C
Solutions
D
Independent Variable
14) Increasing or increased by successive additions. Growing. Mounting.
A
Product
B
Cumulative
C
Interval
D
Decay
15) A straight line drawn through the center of a group of data points plotted on a scatter plot
A
Residual
B
Exponential Growth
C
Correlation Coefficient
D
Line of Best Fit
*select an answer for all questions
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