Please follow the instructions, this consists of two parts. Please keep parts separate in the solution.

HM06a (250 words)
1. Nominal measurement scales are used to classify data into distinct categories or groups, such as gender or favorite color, while ordinal measurement scales provide data that can be ranked or ordered, such as movie ratings or academic grades.
2. Interval measurement scales provide data that have equal intervals between values, such as temperature in Fahrenheit, while ratio measurement scales have a true zero point, such as height or weight.
3. The consistency or stability of a measuring instrument over time or across different observers is known as its reliability, while the degree to which the instrument measures what it is intended to measure is referred to as its validity. A high level of reliability means that the instrument produces consistent scores each time it is administered, whereas a high level of validity means that the instrument accurately measures the construct it is intended to measure, such as intelligence or personality.
4. Test-retest reliability pertains to the stability of a test over time, which is assessed by...