How do you measure variability? *hint* There are three ways!
What is Range, Average Deviation, Standard Deviation.
100
In a normal distribution, the mean, median and mode are where on the graph?
What is all are in the middle.
100
Find the Mean, Median and Mode for this data set!
Round to the nearest hundredth!
12, 3, 11, 8, 5, 8, 27
What is
Mean:10.57
Median: 8
Mode: 8
200
What are the Scales of Measurement?
What is NO OIL IN RIVERS! Nominal, Ordinal, Interval, Ratio
200
1 2 4 100
what is the range?
What is 99
200
DATASETS!
A: 2, 6, 10, 12
B: 4, 5, 6, 7, 8
C: 6, 6, 6, 6, 6
Which data set has the most variability?
What is data set A!
200
In a positively skewed distribution, what direction is the tail going left, or right?
What is to the right
200
What is the Average Deviation of the same data set?
Round to the nearest Hundredth!
12, 3, 11, 8, 5, 8, 27
What is ZERO!
300
Teacher ranks her students 1rst 2nd 3rd... etc, by their test scores. What scale of Measurement is that?
What is Ordinal
300
What is the Order of Operations when you are solving an equation?
What is Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction.
300
What is used to indicate how well the mean describes the data set?
What is the Standard Deviation!
300
What causes a distribution to be skewed?
What is an outlier.
300
What is the Standard Deviation of the same data set?
Round to nearest Hundredth!
12, 3, 11, 8, 5, 8, 27
What is 7.31
400
When is most useful to calculate the median?
What is when their is an outlier in the data.
400
Equation for Population and Sample Standard Deviation;
What is the square root of (Summation of X-M) squared /N and the square root of (Summation of X-M) squared /(N-1)
400
A large standard deviation value indicates that the Mean is ....
What is, Not representative of data.
400
What is the only type of distribution that has 68% of scores within one standard deviation?
What is a normal curve/distribution.
400
In what situation would the Average Deviation from the mean not be zero?
What is NEVER
500
What is the big difference between Interval and Ratio?
What is Interval can be in the Negatives. Ratio has an absolute zero.
500
Equation for Average Deviation;
What is Summation of (X-M)/N
500
_____ helps make decisions based on how meaningful the data is and whether it is or isn't due to chance.
What is Variability/Statistics
500
When comparing two frequency distributions, what are three visual characteristics that help indicate which graph has a smaller or larger standard deviation?
What is Peaks, Gaps, and Range.
500
Is this a positive or negatively skewed distribution?