Measurement Levels Descriptive Analyses

Question 1

The Process of assigning descriptors to represent the range of possible responses to a question about a particular object or construct

Answer 1

Scale Measurement

Question 2

Degrees of intensity are commonly referred to as

Answer 2

scale points

Question 3

What so scale measurements assign

Answer 3

degrees of intensity to the responses

Question 4

What are the four basic scale levels

Answer 4

• Nominal
• Ordinal
• Interval
• Ratio

Question 5

Nominal Scales

Answer 5

• assign numbers to objects where different numbers indicate different objects
• no other meaning for numbers

Question 6

What are the properties of Nominal Scales?

Answer 6

• responses don’t contain a level of intensity
• Allows to categorize the responses to labels
• Mutually exclusive categories
• categorical data
• ranking of the set of responses is not possible
• only possible arithmetic: Count the number of responses in each category

Question 7

What scale assigns numbers to objects, but also give numbers a meaningful order?

Answer 7

Ordinal scale

Question 8

What are the properties of Ordinal Scales

Answer 8

• Express relative magnitude between the answers to a question
• Responses can be rank-ordered in a hierarchical pattern
• Relationships between responses can be determined by greater than/less than and more often/less often
• Can’t determine absolute differences between rankings

Question 9

Numbers have order, but there are also equal intervals
between adjacent categories, lacks true zero point

Answer 9

Inverval Scales

Question 10

What are the properties of Interval Scales?

Answer 10

• Numbers in scale are meaningful and represent equal increments
• Numbers represent not only the hierarchical differences but also the absolute differences
• They lack a true zero point

Question 11

Division only works with which scale?

Answer 11

Ratio scales

Question 11

Differences are meaningful, additionally,…

Answer 11

ratios are too

Question 12

What type of scale should you never divide?

Answer 12

Interval scales

Question 13

What is measures of central tendency?

Answer 13

An attempt to describe a set of data by identifying the central position

Question 14

What are the three summary statistics?

Answer 14

1. Mean
2. Median
3. Mode

Question 14

What is measures of central tendency also classed as?

Answer 14

summary statistics

Question 15

What is the mean?

Answer 15

The average of a dataset and is affected by outliers.

Question 16

What is the most comment measurement of central tendency

Answer 16

mean

Question 17

What is the median

Answer 17

The middle number in a sorted ascending or descending list of numbers and is not affected by outliers.

Question 18

What is the mode?

Answer 18

Value that occurs most often, is not affected by outliers, and there may not be any modes or may have several modes.

Question 19

Is measures of central tendency adequate to describe data?

Answer 19

No!

Question 20

What is dispersion in statistics

Answer 20

The extent to which a distribution is stretched or squeezed

Question 21

What are the two type of measures of dispersions?

Answer 21

• Range
• Standard Deviation

Question 22

What is a range?

Answer 22

Difference between the largest and smallest values

Question 22

What is the simplest measure of dispersion?

Answer 22

Range

Question 23

What is a variance?

Answer 23

• Measure of how data points differ from the mean and measures how far a set of data (numbers) are spread out from their mean value.

or

• Average of squared deviations of values from the mean

Question 24

What are the steps of calculating the variance?

Answer 24

• Find the mean of the given data set.
• Now subtract the mean from each value and square them.
• Find the sum of these squared values.
• Divide the sum of squares by n-1.
• The result is the variance.