Data

Question 1

Ratio

Answer 1

Properties: constant size interval between values, true zero

Examples: most measurement (weight, volume, length, etc.)

Question 2

Interval

Answer 2

Properties: constant size interval between values, arbitrary zero

Examples: temperature, time of day, date of the year

Question 3

Ordinal

Answer 3

Properties: ordered or ranked data, no numerical differences between data

Examples: darker versus lighter, shorter versus taller, faster versus slower,

Question 4

Nominal

Answer 4

Properties: non-numeric qualities or atributes, names

Examples: color - red, white, blue butterflies, male versus female, localities, etc.

Question 5

Continuous

Answer 5

Properties: data where there are an infinite number of values between any two individual values

Example: 2.7 and 2.8, 2.701, 2.700001, 2.799999, 2.79

Question 6

Discrete

Answer 6

Properties: integers (counts)

Example: 35 seals, 22 cells, 15 subjects, 2 pairs of wings

Question 7

Accuracy

Answer 7

Properties: refers to how close a measurement is to the real measurement, evaluates measuring device

Example: 1.5g = observed measurement, 1.55g = actual or real measurement, scale or balance is only accurate to the nearest .1g

Question 8

Precision

Answer 8

Properties: refers to how close repeated measurements are to each other

Example: 1.45g, 1.46g, 1.45g, 1.48g, 1.46g, 1.45g, etc.

Question 9

Implied Range

Answer 9

Data Significant Figures Implied Range

8. 2 2 8.150 - 8.249
9. 26 3 8. 2550- 8.2649
10. 0 2 7.950- 8.049