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)