NAME_______________________________
STATISTICS GNST 3020
PRACTICE FINAL
YOU MUST SHOW ALL WORK WHERE APPROPRIATE
ANSWERS WITHOUT CALCULATIONS SHOWN WILL NOT BE GIVEN CREDIT
BE ABLE TO IDENTIFY THE FOLLOWING TYPES OF DATA:
Nominal Continuous
Ratio Quantitative
Discrete Qualitative
Interval Ordinal
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UNDERSTAND & IDENTIFY THE FOLLOWING ERRORS:
misleading percent small sample
loaded question self-selected sample
loaded question biased sampling
assuming cause from correlation
What is the difference between an OBSERVATIONAL and an EXPERIMENTAL study?
Diabetics need to keep close watch on glucose blood levels (mg/100mL) The 12-hour fasting blood glucose levels for 17 diabetics are given below:
56 60 68 85 86 96 103 111 128 151 159 166 182 191 192 197 201
2A) If you plan to construct a Frequency Table with 6 classes, what would the class width be?
class width = largest score –smallest score =
number of classes
2B) Complete the Frequency Distribution Table below.
relative frequency = class frequency X 100
Sum of frequencies
Upper & Lower Class Limits
Upper & Lower Class Boundaries
(TALLY)
Class Frequency
Relative (%)
Frequency
56 – 80
55.5 – 80.5
81 -- 105
80.5 – 105.5
106 – 130
105.5 – 130.5
131 – 155
130.5 – 155.5
156 – 180
155.5 – 180.5
181-- 205
180.5 – 205.5
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SUM =
2C) Construct a histogram based on the Frequency Table above. LABEL AXES CORRECTLY!
2D) Construct a Relative Frequency Histogram based on the Frequency Table above. LABEL AXES CORRECTLY!
For one...