STA1610
EXAM PACK
FOR ASSISTANCE WITH THIS MODULE +27 67 171 1739
,STA1610 OCTOBER NOVEMBER 2025 EXAM MEMO
1) Complete the sentence.
__________ is a statistical method that draws conclusions about the __________
based on computed __________ from the __________.
A. sample, inferential statistics, parameter, population
B. population, sample, descriptive statistics, parameter
C. inferential statistics, population, statistics, sample
D. descriptive statistics, population, statistics, sample
Explanation: Inferential statistics uses sample statistics to make conclusions about
a population.
2) Which of the following is NOT a goal of descriptive statistics?
A. Summarising data
B. Displaying aspects of the collected data
C. Reporting numerical findings
D. Estimating characteristics of the population
E. Presenting data in tables, charts, and summary statistics
Explanation: Estimating population characteristics is inferential, not descriptive.
3) Which statement is incorrect with regard to a statistic?
A. A sample standard deviation is a statistic.
B. A statistic is an estimate of a population parameter.
C. A statistic is a summary measure calculated from a sample.
D. A population mean is a statistic.
E. A statistic represents a property of a sample.
Explanation: A population mean is a parameter, not a statistic.
,4) A school records the number of late arrivals per learner per week. This
variable is:
A. Qualitative nominal
B. Qualitative ordinal
C. Quantitative continuous
D. Quantitative discrete
E. Ratio but not numerical
Explanation: It is a count, so it is discrete.
5) Which variable is NOT categorical?
A. Gender
B. Internet provider
C. Height
D. Marital status
E. Defective vs non-defective
Explanation: Height is numerical (continuous).
6) A summary measure calculated from a sample to describe a population
characteristic is called a:
A. Parameter
B. Population
C. Census
D. Statistic
E. Experiment
Explanation: A statistic is computed from a sample.
7) Which statement is incorrect about categorical data?
, A. It can be nominal or ordinal.
B. Frequencies can be counted.
C. The mode can be found.
D. The mean can be calculated.
E. It can be summarised in a frequency table.
Explanation: The mean is not meaningful for categorical labels.
8) A teacher ranks learners as 1st, 2nd, 3rd in a race. The scale of
measurement is:
A. Nominal
B. Ordinal
C. Interval
D. Ratio
E. Continuous
Explanation: Rankings have order but unequal gaps.
9) Which statement is correct?
A. Gender and religion are ordinal variables.
B. Money spent in a mall is always discrete.
C. Number of girls with blue eyes is discrete.
D. Position finished in a race is continuous.
E. Number of wrong turns is continuous.
Explanation: Counting girls gives a discrete number.
10) Two graphical techniques appropriate for nominal data are:
A. Bar chart and histogram
B. Pie chart and ogive
C. Bar chart and pie chart
EXAM PACK
FOR ASSISTANCE WITH THIS MODULE +27 67 171 1739
,STA1610 OCTOBER NOVEMBER 2025 EXAM MEMO
1) Complete the sentence.
__________ is a statistical method that draws conclusions about the __________
based on computed __________ from the __________.
A. sample, inferential statistics, parameter, population
B. population, sample, descriptive statistics, parameter
C. inferential statistics, population, statistics, sample
D. descriptive statistics, population, statistics, sample
Explanation: Inferential statistics uses sample statistics to make conclusions about
a population.
2) Which of the following is NOT a goal of descriptive statistics?
A. Summarising data
B. Displaying aspects of the collected data
C. Reporting numerical findings
D. Estimating characteristics of the population
E. Presenting data in tables, charts, and summary statistics
Explanation: Estimating population characteristics is inferential, not descriptive.
3) Which statement is incorrect with regard to a statistic?
A. A sample standard deviation is a statistic.
B. A statistic is an estimate of a population parameter.
C. A statistic is a summary measure calculated from a sample.
D. A population mean is a statistic.
E. A statistic represents a property of a sample.
Explanation: A population mean is a parameter, not a statistic.
,4) A school records the number of late arrivals per learner per week. This
variable is:
A. Qualitative nominal
B. Qualitative ordinal
C. Quantitative continuous
D. Quantitative discrete
E. Ratio but not numerical
Explanation: It is a count, so it is discrete.
5) Which variable is NOT categorical?
A. Gender
B. Internet provider
C. Height
D. Marital status
E. Defective vs non-defective
Explanation: Height is numerical (continuous).
6) A summary measure calculated from a sample to describe a population
characteristic is called a:
A. Parameter
B. Population
C. Census
D. Statistic
E. Experiment
Explanation: A statistic is computed from a sample.
7) Which statement is incorrect about categorical data?
, A. It can be nominal or ordinal.
B. Frequencies can be counted.
C. The mode can be found.
D. The mean can be calculated.
E. It can be summarised in a frequency table.
Explanation: The mean is not meaningful for categorical labels.
8) A teacher ranks learners as 1st, 2nd, 3rd in a race. The scale of
measurement is:
A. Nominal
B. Ordinal
C. Interval
D. Ratio
E. Continuous
Explanation: Rankings have order but unequal gaps.
9) Which statement is correct?
A. Gender and religion are ordinal variables.
B. Money spent in a mall is always discrete.
C. Number of girls with blue eyes is discrete.
D. Position finished in a race is continuous.
E. Number of wrong turns is continuous.
Explanation: Counting girls gives a discrete number.
10) Two graphical techniques appropriate for nominal data are:
A. Bar chart and histogram
B. Pie chart and ogive
C. Bar chart and pie chart
