Well-structured STA1610 EXAM PREPARATION PACK - DISTINCTION GUARANTEED. Contains recent exam questions and answers, and Summarised study notes. All you need to pass the 2024 EXAMS
STA1610
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STA1610 Assignment 01 is based on Study Unit 01, 02 & 03.
DO NOT TAKE SCREENSHOTS AND (OR) SHARE
QUESTIONS FOR THIS ASSIGNMENT!
Part 1
Which one of the following statements is incorrect with regard to a statistic?
A. A statistic is an estimate of a population parameter.
B. A statistic represents a property of a population and not that of a sample.
C. A statistic is a summary measure calculated from a sample.
D. A sample standard deviation is a statistic.
E. A sample mean is a statistic.
Answer Point Value: 4.0 points
Answer Key: B
Part 2
Which one of the following statements is incorrect with regard to variables?
A. Quantitative variables takes on values with equal units i.e. numeric values that
indicate how much or how many.
B. Variables can be classified as categorical or numerical.
C. Quantitative continuous variable results from counting attributes of an element.
D. Numerical variables can either be discrete or continuous.
E. Qualitative variables uses labels or names to describe attributes of elements.
https://mymodules.unisa.ac.za/portal/site/STA1610-21-Y1/tool/7f36b47e-a61d-44c5-9121-28b49c528fe5/jsf/print/printAssessment Page 1 of 9
, Answer Point Value: 4.0 points
Answer Key: C
Part 3
Which one of the following statements is incorrect with regard to variables and their scale of
measurements?
A. A nominal scale of measurement is the weakest form while a ratio scale is the
strongest form of measurement.
B. The mean and the median cannot be determined for a nominal scale of
measurement.
C. Quantitative continuous variables result from measuring attributes of an element.
D. Ordinal scale of measurement is a higher level of measurement that interval scale.
E. Quantitative discrete variables result from counting attributes of an element.
Answer Point Value: 4.0 points
Answer Key: D
Part 4
A majority of the rural schools in South Africa are in the Eastern Cape, Kwa-Zulu Natal and the
Limpopo province. The Department of Basic Education requires your assistance in gathering
some of the information to effectively manage their scholar transport system in some of the rural
areas. Which one of the following statements is incorrect with regard to type of variables?
A. The age at which learners first enroll at a school is a quantitative continuous
variable.
B. The travel time from the learner’s home to school is a quantitative continuous
variable.
C. The number of schools requiring learner transport is a quantitative discrete variable.
D. Whether or not a school is classified as a special need school is a qualitative
nominal variable.
E. The size of the bus [i.e. minibus (small), coach bus (medium) and articulated bus
(large)] required to transport learners is a qualitative nominal variable.
Answer Point Value: 4.0 points
Answer Key: E
https://mymodules.unisa.ac.za/portal/site/STA1610-21-Y1/tool/7f36b47e-a61d-44c5-9121-28b49c528fe5/jsf/print/printAssessment Page 2 of 9
, Part 5
Some personal and school related information was collected on learners requiring scholar
transport. Variables I to V below shows the collected information.
I. Progress at school i.e., satisfactory and not satisfactory
II. Sex assigned at birth i.e., female, intersex and male
III. List of subjects enrolled for.
IV. Number of subjects enrolled for.
V. Emotional Quotient (EQ score) and Intelligence Quotient (IQ score)
For which variable(s) is it possible to determine the median?
A. I, II & III
B. It is possible to determine the median for all variables I to V.
C. I, IV & V
D. Only I
E. IV & V
Answer Point Value: 4.0 points
Answer Key: C
Part 6
Which one of the following statements is incorrect with regard to tabular methods for
summarizing data?
A. Percentage is equal to the relative frequency multiplied by 100.
B. Cumulative frequency distributions are tabular methods suitable for summarizing
quantitative data.
C. Frequency distribution, relative frequency distribution and percentage frequency
distribution are tabular methods suitable for summarizing both qualitative and
quantitative data.
D. To create a frequency distribution for qualitative data we first need to define non-
overlapping classes by determining the number of classes, class width and class limits.
E. Cross tabulations are suitable for summarizing relationships between two variables.
Answer Point Value: 4.0 points
Answer Key: D
https://mymodules.unisa.ac.za/portal/site/STA1610-21-Y1/tool/7f36b47e-a61d-44c5-9121-28b49c528fe5/jsf/print/printAssessment Page 3 of 9
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