Basecamp: levels of Measurement

Which of the following statements is true regarding data on an interval scale? the scale contains intervals between adjacent values that are equal the scale includes a true zero point the scale is known as a classification scale the scale is considered qualitative

the scale contains intervals between adjacent values that are equal An interval scale is characterized by the intervals between adjacent values being equal, but there is no true zero point. Examples of interval scale measurements include temperature (e.g., body, skin, whirlpool) on the Fahrenheit or Celsius scale and some developmental and functional status tests.

Blood type, breath sounds, and type of arthritis fall under which measurement scale? Nominal Ordinal interval ratio

Nominal

Manual muscle test grades fall under which measurement scale? Nominal Ordinal interval ratio

Ordinal

Match the level of measurement to the appropriate description: Ordinal

The data is ranked on the basis of property of the variable; but the interval between ranks may not be equal

Match the level of measurement to the appropriate description: Ratio

The intervals between adjacent values are equal and there is a true zero

Match the level of measurement to the appropriate description: Interval

The intervals between adjacent values are equal but there is no true zero

Match the level of measurement to the appropriate description: Nominal

The values of the variables are mutually exclusive and exhaustive categories

Which of the following is an example of an ordinal descriptive measure? functional levels of assistance temperature scale blood type distance walked

functional levels of assistance An ordinal measure is considered a ranking scale. Items are ranked on the basis of a property of the variable, but the intervals may not be equal. Functional levels of assistance are ranked from total dependence to independent, but the levels in between may not be equal from one to the next.

Temperature on the Fahrenheit scale fall under which measurement scale? Nominal Ordinal interval ratio

interval

Which type of measurement scale is utilized when measuring the temperature of water in a hydrocollator unit? interval ratio nominal ordinal

interval Temperature in a hydrocollator unit is measured in Fahrenheit or Celsius. An interval measurement scale refers to intervals between adjacent values that are equal, however, there is no true zero point. Examples of interval scale measurements in physical therapy include temperature (e.g., body, skin, whirlpool) and some developmental and functional status tests.

Which measure of central tendency can be applied to nominal data? mean median mode standard deviation

mode The mode is the only measure of central tendency that is meaningful when applied to nominal data since the intervals between categories are not equal or known. Standard deviation is a measure of variance.

The mean can be used to measure central tendency for which of the following measurements? Glasgow Coma Scale and breath sound classification Wagner's Ulcer Grade Classification Scale and joint laxity grades Modified Ashworth Scale and manual muscle test nerve conduction velocity and Timed Up and Go Test

nerve conduction velocity and Timed Up and Go Test Nerve conduction velocity and Timed Up and Go Test are considered ratio scale measurements. The mean can be used as a measure of central tendency for data on the ratio and interval scale. The other options contain one or more measurements that fall on the nominal or ordinal scale.

Variables such as gender and nationality are measured on which scale? ratio ordinal nominal interval

nominal The nominal level of measurement refers to the assignment of values or scores based on mutually exclusive and exhaustive categories with no inherent rank order. Examples of variables measured on a nominal scale include gender, handedness, favorite color, and blood type.

The Borg scale is most representative of which type of data scale? nominal ordinal interval ratio

ordinal An ordinal scale of measurement is also known as a ranking scale. The data is ranked on the basis of a property of the variable, but the intervals between the ranks may not be equal or known. The Borg scale of rating of perceived exertion is a type of ordinal scale as higher numbers indicate greater exertion.

Manual muscle testing is an example of what kind of data? nominal ordinal ratio interval

ordinal Manual muscle testing is an example of ordinal data because although there is a hierarchy, the intervals between the rating levels do not represent equal units of measure.

What type of scale is used on the Berg Balance Scale? interval nominal ordinal ratio

ordinal The Berg Balance Scale uses an ordinal scale ranging from 0-4 to score each of the 14 functional tasks. The ordinal scale has descriptive criteria provided for each scoring level based on level of independence, time, and distance.

The time taken to complete an activity falls under which measurement scale? Nominal Ordinal interval ratio

ratio

Which scale of measurement has an absolute zero? nominal ordinal interval ratio

ratio A ratio measurement scale is an interval scale with a zero position indicating the absence of the quantity being measured. Examples of ratio scale measurements include range of motion (degrees), distance walked (m), time to complete an activity (s), and nerve conduction velocity (m/sec).