BSNS 112 MIDTERM QUESTIONS AND ANSWERS 2025

BSNS 112 MIDTERM QUESTIONS AND ANSWERS 2025




Descriptive statistics - (answer)- methods of organising, summarising and presenting data in a good form

e.g. graphs, tables, measures



Inferential statistics - (answer)Random sample of data taken from a population to describe and make
inferences about the population



Types of data - (answer)quantitative and qualitative



Quantitative data - (answer)Numerical

e.g. Age in years



Qualitative data - (answer)Grouped or categorical

e.g. S, M, L, XL, XXL



Categorical data (Qualitative) - (answer)Nominal or Ordinal



Numerical data (Quantitative) - (answer)Discrete or Continuous



Frequency - (answer)x



Proportion - (answer)p



Mean - (answer)average



Median - (answer)middle number



Mode - (answer)most common number

, BSNS 112 MIDTERM QUESTIONS AND ANSWERS 2025




Trimmed mode - (answer)most common number with extreme 5% trimmed



Central locations - (answer)Mean

Median

Mode

Trimmed Mode



Measures of spread - (answer)Range

Interquartile range

Variance



Range - (answer)Max observation less Minimum



IQR - (answer)Middle 50%



Variance - (answer)Squared deviation around the mean



Standard Deviation (SD) - (answer)average distance observations are away from the mean



Coefficient of variation - (answer)no units = good for comparisons



relative measure of variability



used to compare variability between groups with different means



Box and whisker - (answer)