BSNS 112 EXAM PREPARATION NEWEST ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT ANSWERS VERIFIED ANSWERS

BSNS 112 EXAM PREPARATION NEWEST ACTUAL EXAM COMPLETE
QUESTIONS AND CORRECT ANSWERS VERIFIED ANSWERS
Descriptive statistics - CORRECT ANSWER✅✅✅- methods of organising, summarising
and presenting data in a good form
e.g. graphs, tables, measures


Inferential statistics - CORRECT ANSWER✅✅✅Random sample of data taken from a
population to describe and make inferences about the population


Types of data - CORRECT ANSWER✅✅✅quantitative and qualitative



Quantitative data - CORRECT ANSWER✅✅✅Numerical
e.g. Age in years


Qualitative data - CORRECT ANSWER✅✅✅Grouped or categorical
e.g. S, M, L, XL, XXL


Categorical data (Qualitative) - CORRECT ANSWER✅✅✅Nominal or Ordinal



Numerical data (Quantitative) - CORRECT ANSWER✅✅✅Discrete or Continuous



Frequency - CORRECT ANSWER✅✅✅x



Proportion - CORRECT ANSWER✅✅✅p



Mean - CORRECT ANSWER✅✅✅average



Median - CORRECT ANSWER✅✅✅middle number

, Mode - CORRECT ANSWER✅✅✅most common number



Trimmed mode - CORRECT ANSWER✅✅✅most common number with extreme 5%
trimmed


Central locations - CORRECT ANSWER✅✅✅Mean
Median
Mode
Trimmed Mode


Measures of spread - CORRECT ANSWER✅✅✅Range
Interquartile range
Variance


Range - CORRECT ANSWER✅✅✅Max observation less Minimum



IQR - CORRECT ANSWER✅✅✅Middle 50%



Variance - CORRECT ANSWER✅✅✅Squared deviation around the mean



Standard Deviation (SD) - CORRECT ANSWER✅✅✅average distance observations are
away from the mean


Coefficient of variation - CORRECT ANSWER✅✅✅no units = good for comparisons


relative measure of variability