BQA 3123 Test 1 MS State Dr. BallardCentral Tendency
Tendency of data to revolve around the middle. It will cluster around certain values.
Mean
Average
Mode
Most. Might not have one. It is a supplemental value.
Median
Middle after put in order
If mean is less than me...
BQA 3123 Test 1 MS State Dr. Ballard
Central Tendency - correct answer Tendency of data to revolve around the middle. It will cluster around certain values.
Mean - correct answer Average
Mode - correct answer Most. Might not have one. It is a supplemental value.
Median - correct answer Middle after put in order
If mean is less than median - correct answer Negative Skewed Distribution
If mean is greater than median - correct answer Positive Skewed Distribution
If mean is equal to median - correct answer Symmetrical distribution
What influences the mean? - correct answer Outliers or extreme values
Range - correct answer A measure of variability/spread/dispersion
Limitation of the range - correct answer It only uses two values. Specifically, max and min
Emperical Rule - correct answer Is used when we have mound-shaped and symmetric distribution and it allows us to say about 68% of data will fall within one st. dev from the mean, 95% within two st. dev, and
99.7% within three st. dev.
Normal Distribution - correct answer Mound-shaped, symmetric, bell curve area under the curve of 1. Can use area in terms of probability.
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