- Submitted By: Shinta-Dewi
- Date Submitted: 03/10/2015 1:14 PM
- Category: Business
- Words: 1501
- Page: 7

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...