BSNS 112 Exam Preparation Questions
and Correct Answers/ Latest Update /
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Descriptive statistics
Ans: - methods of organising, summarising and presenting data in a good
form
e.g. graphs, tables, measures
Inferential statistics
Ans: Random sample of data taken from a population to describe and
make inferences about the population
Types of data
Ans: quantitative and qualitative
Quantitative data
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Ans: Numerical
e.g. Age in years
Qualitative data
Ans: Grouped or categorical
e.g. S, M, L, XL, XXL
Categorical data (Qualitative)
Ans: Nominal or Ordinal
Numerical data (Quantitative)
Ans: Discrete or Continuous
Frequency
Ans: x
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Proportion
Ans: p
Mean
Ans: average
Median
Ans: middle number
Mode
Ans: most common number
Trimmed mode
Ans: most common number with extreme 5% trimmed
Central locations