this documewnt contains comparative questions and answers to sta1601 assignment 1 of 2023, using it correctly for research and revision will help you score above 75%
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Started on Sunday, 28 May 2023, 1:17 PM +27844708483
State Finished fac,ecs,mac,tax,fin inv,bnu,qmi,dsc,sta tutorials
Completed on Sunday, 28 May 2023, 2:19 PM Fin Accounting, management Accounting, taxation,
Time taken 1 hour 2 mins investment management , financial
Marks 20.33/25.00 mathematics, business statistics, quantitative decision
Grade 81.33 out of 100.00
making
Question 1
Incorrect
Mark 0.00 out of 2.00
Consider Table 1.5 of the prescribed textbook: Hours until failure of a sample of 200 light bulbs for the Electronica Nieves example. Which one of the
following statements is incorrect?
NB: You do not need the textbook to answer this question, you only need to be aware of the variable in question which is the lifetime of light
bulbs.
a. The 200 light bulbs manufactured with the new fitment represent the population.
¯ 2
b. The sample mean (X̄ ) (���) and the sample variance (S 2 ) (��� ) are examples of sample statistics.
¯ 2
c. The process of using the sample mean (X̄ ) (���) and (or) the sample variance (S 2 ) (��� ) to make estimates about the population is
referred to as statistical inference.
d. Hours until failure is an example of a quantitative continuous variable.
e. A histogram is the best graphical summary for representing the data given in Table 1.5.
Question 2
Partially correct
Mark 1.33 out of 2.00
Once again consider data from Table 1.5 of the prescribed textbook. What is the scale of measurement for the variable hours until failure?
NB: You do not need the textbook to answer this question, you only need to be aware of the variable in question which is the lifetime of light
bulbs.
a. Nominal scale
b. Ordinal scale
c. Interval scale
d. Ratio scale
e. No scale of measurement
, Question 3
Correct
Mark 2.00 out of 2.00
The information below is a portion of the Case Study Problem in Chapter 1 of the prescribed textbook i.e., Customer satisfaction survey in the large hotel
chain sector. Note how the variables cleanliness and endorsement were recorded. Which one of the following statements is correct?
a. Hotel chain is a qualitative ordinal variable.
b. Average price paid is a quantitative discreet variable.
c. Cleanliness is a qualitative nominal variable.
d. Customer score is a quantitative continuous variable.
e. Endorsement is a quantitative variable.
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