A nominal variable is a categorical variable that has no intrinsic ordering or rank.”Mother-tongue” represents a category (e.g., English, Hindi, French) without any quantitative value or natural order. In contrast, variables like blood sugar level, temperature, and cost of a cup of tea are continuous or ordinal in nature.
Fig. shows repeated glucose measurement for a single sample. Choose the correct findings from the following statements.
LIST:
A. Instrument A is precise and unbiased.
B. Instrument B is precise and biased.
C. Instrument B has a positive bias.
D. Instrument C has only positive bias.
E. Instrument C is unbiased.