# Unit 3 - Descriptive Statistics: Question Preview (ID: 29405)

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**The average of a data set. The sum of the values divided by the number of values.**

a) Mean

b) Median

c) Mode

d) Range

**A distribution of data that is not symmetric with respect to its mean.**

a) Mean

b) Median

c) Skewed Data Distribution

d) Range

**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) Mean

c) Relative Frequency

d) Histogram

**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) Interval

b) Quartile

c) Residual Plot

d) x-axis

**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) Mode

c) Inter Quartile Range

d) Skew

**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) Median

b) Outlier

c) 2nd Quartile

d) Mean

**The distance between the first quartile and the third quartile. The length of the interval that contains the middle 50% of data values.**

a) Domain

b) Minimum

c) Maximum

d) Interquartile Range

**A relationship between measures of two types of quantities so that one is statistically dependent on the other.**

a) Interquartile Range

b) Association

c) Mean

d) Box Plot

**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) Correlation Coefficient

b) Standard Deviation

c) Medium

d) Histogram

**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) Histogram

b) Box Plot

c) Pie Chart

d) Linear Regression

**Found by arranging all the values from lowest to highest and picking the middle one.**

a) Range

b) Mean

c) Mode

d) Median

**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) Linear Regression Equation

b) Residual

c) Variance

d) Correlation Coefficient

**In a mathematical equation or relationship between two or more variables, any variable whose value determines that of others.**

a) Solutions

b) Y-intercept

c) Dependent Variable

d) Independent Variable

**Increasing or increased by successive additions. Growing. Mounting.**

a) Decay

b) Cumulative

c) Product

d) Interval

**A straight line drawn through the center of a group of data points plotted on a scatter plot**

a) Correlation Coefficient

b) Exponential Growth

c) Line of Best Fit

d) Residual

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