Question

1) What is the best description of the following type of variable: Letter grades in a course What is the best description of the following type of variable: Letter grades in a course 0 A continuous 0 B discrete o c ordinal O D nominal

Answer 1

Answer:

1) letter grades in course Ordinal

because letter grades in course have some specific order,

2) the name person Nominal

because nominal are just labels.

3) mean homicide rate per year Continuous

because rate is always continuous. it takes all values.

4) Bristles on a fly Discrete

because number of bristles are always discrete. its not decimal.

5) standard error = (SD) /  $\sqrt{n}$ = 8 / $\sqrt{16}$ = 2

standard error = 2

6) we are 95% confident that the population mean lies within the CI