Data, Variables, & Calculators
Displaying and Describing Distributions
Measures of Center
Measures of Spread
Miscellaneous
100
Our primary source of technology in this course.
What is the TI-84 graphing calculator?
100
2 of the 6 key features that are often of interest when analyzing a distribution of data.
What are (1) center of a distribution, (2) distribution's variability, (3) shape of a distribution, (4) peaks or clusters, (5) outliers, and (6) granularity?
100
The three (3) common "M's" in the measures of center.
What are the mean, median, and mode?
100
The difference between the maximum and minimum.
What is range?
100
A distribution whose values tail off to the right.
What is skewed right or positive skew?
200
A very simplistic visual display using dots for each individual piece of data.
What is dot plot?
200
1 of 3 key shapes of a distribution.
What are (1) symmetric, (2) skewed right, and (3) skewed left?
200
The formula for finding the position for the median in a data set with an odd number of observations.
What is (n +1)รท2?
200
The difference between the upper and lower quartile.
What is interquartile range (IQR)?
200
A visual display that looks like a bar graph but is made up of equal intervals.
What is a histogram?
300
A visual display used to show categorical (qualitative) variables.
What is a bar graph?
300
Values that differ greatly from the pattern established by the majority of the observations.
What are outliers?
300
The way to find the value for the median in a data set with an even number of observations.
What is find the average of the two (2) middle values?
300
The amount of data represented by the IQR.
What is 50% or half?
300
The key sequence to view immediately a visual display on the graphing calculator.
What is ZOOM - 9?
400
The key sequence to lock into the alphabet on the graphing calculator.
What is 2nd - alpha?
400
Values occurring only at fixed intervals of a distribution.
What is granularity?
400
The position of the median for data set with n = 43.
What is the 22nd position?
400
A graphical display based on the five-number summary.
What is a box plot?
400
A distribution in which the mean is less than the median.
What is skewed left?
500
A more appropriate variable to study rather than the number of people or objects that belong in categories of different sizes.
What are rates or percentages?
500
The individual observations appear in the bar graph like visual display.
What is a stemplot?
500
A term to describe a measure whose value is relatively unaffected by the presence of outliers in a distribution.
What is resistant or resistance?
500
A measure of variability based on the observations' squared deviations from the mean.
What is standard deviation?
500
The percent of observations falling within 2 standard deviations of the mean in a mound shaped symmetric distribution.
What is 95%?
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