Data

Question 1

NOMINAL?

Answer 1

Simplest and least descriptive ind of numerical data.

Question 2

EXAMPLES OF NOMINAL?

Answer 2

Categories.

Question 3

APPROPRIATE MEASURE OF NOMINAL?

Answer 3

Mode- most common.

Question 4

ORDINAL?

Answer 4

Numerical value is used but is based on ranks or ratings.

Question 5

EXAMPLES OF ORDINAL?

Answer 5

May be asked to rank by preferences.

Question 6

APPROPRIATE MEASURE OF ORDINAL?

Answer 6

Median- middle number.

Question 7

INTERVAL?

Answer 7

Concerns fixed + publicly agreed measurements.

Question 8

EXAMPLES OF INTERVAL?

Answer 8

Weight, temperature and speed.

Question 9

APPROPRIATE MEASURE OF INTERVAL?

Answer 9

Mean- add up and divide by how many there is.

Question 10

QUANTATIVE DATA?

Answer 10

Focuses on numbers and frequencies rather than meaning and experience.

Question 11

STRENGTH OF QUANT?

Answer 11

Easy to replicate and compare and consistency can be checked.

Question 12

WEAKNESS OF QUANT?

Answer 12

Lac ecological validity especially close questions ps may feel they need to respond in a particular way.

Question 13

QUALITATIVE DATA?

Answer 13

Methods are ways of collecting data which are concerned with describing meaning rather than drawing statistical inferences.

Question 14

STRENGTH OF QUAL?

Answer 14

More valid than quant because its more detailed and ps aren’t forced to act in a particular way.

Question 15

WEAKNESS OF QUAL?

Answer 15

May lac validity because its open to interpretation which could result in experiment bias.

Question 16

PRIMARY DATA?

Answer 16

Researcher collects data directly from ps.

Question 17

SECONDARY DATA?

Answer 17

When the researcher uses data that has already been conducted by someone else.

Question 18

HOW TO CALCULATE MEAN?

Answer 18

Add up all the numbers and divide by how many there is.

Question 19

STRENGTHS OF MEAN?

Answer 19

Represents all the data in the set.

Question 20

WEAKNESS OF MEAN?

Answer 20

It may not represent best the general trend in a set of scores.

Question 21

HOW TO CALCULATE MEDIAN?

Answer 21

Put numbers in order and count to the middle number.

Question 22

STRENGTHS OF MEDIAN?

Answer 22

Unaffected by outliers.

Question 23

WEAKNESSES OF MEDIAN?

Answer 23

Doesn’t take every score into account so less sensitive than the mean.

Question 24

HOW TO CALCULATE THE MODE?

Answer 24

Most common number.

Question 25

STRENGTHS OF MODE?

Answer 25

Shows what ps most scored.

Question 26

WEAKNESSES OF MODE?

Answer 26

If theres more than one mode it won’t let you summarise the results very well.

Question 27

HOW TO CALCULATE THE RANGE?

Answer 27

Biggest number subtract the smallest number.

Question 28

STRENGTH OF RANGE?

Answer 28

Easy to calculate

Question 29

WEAKNESS OF RANGE?

Answer 29

Only uses highest and lowest score, ignores the rest.

Question 30

HOW TO CALCULATE VARIANCE?

Answer 30

Standard deviation but don’t square root it.

Question 31

STRENGTHS OF VARIANCE?

Answer 31

Uses all scores more sensitive than range.

Question 32

WEAKNESSES OF VARIANCE?

Answer 32

Hard to draw comparisons as the final is squared.

Question 33

HOW TO CALCULATE STANDARD DEVIATION?

Answer 33

Work out the mean, subtract the mean from all the numbers, square your answers and the add them up, take the number of scores and minus one and the divide your previous number by the number of scores - 1.