Data Analysis

Question 1

Define Qualitative Data

Answer 1

Data that’s expressed in words and non-numerical methods

Question 2

Define Quantitative data

Answer 2

Data that can be counted - often in numerical

Question 3

What are the strengths of Qualitative Data?

Answer 3

• Provides rich amounts of data

- Good External Validity

Question 4

What are the limitations of Qualitative Data?

Answer 4

• Difficult to analyse
• Subjective to interpretations
• Subject to bias

Question 5

What are the strengths of Quantitative data?

Answer 5

• simple to analyse
• easy to compare
• objective

Question 6

What are the limitations of Quantitative Data?

Answer 6

• Low external validity

- narrower in scope and meaning

Question 7

What is Primary Data?

Answer 7

Data collected specifically for the investigation

Question 8

What is Secondary Data?

Answer 8

Data that has been previously collected, not collected by the researcher

Question 9

What are the strengths of Primary Data?

Answer 9

• Authentic

- Specifically targets required information

Question 10

What are the limitations of Primary Data?

Answer 10

• Time-Consuming

Question 11

What are the strengths of Secondary Date?

Answer 11

• Easily accessed and analysed

- Desired info exists

Question 12

What are the limitations of Secondary Data?

Answer 12

• May be outdated/incomplete

- Content may not match needs completely

Question 13

What are Measures of Central Tendency?

Answer 13

Averages that provide information on the most typical values in a set of data

Question 14

What are the 3 Measures of Central Tendency?

Answer 14

• Mean
• Median
• Mode

Question 15

What are 2 aspects of the ‘Mean’?

Answer 15

• Uses all values in a set of data, so it’s representative

- Can be distorted by extreme values

Question 16

What are 3 aspects of the ‘Median’?

Answer 16

• Not affected by extreme values
• Easy to calculate
• Not all values are included so not entirely representative

Question 17

What are 2 aspects of the ‘Mode’?

Answer 17

• Easy to calculate

- Not representative

Question 18

What are Measures of Dispersion?

Answer 18

How far values vary and differ from each other

Question 19

What are the 2 Measures of dispersion?

Answer 19

Standard Devation

Range

Question 20

What are the aspects of ‘Range’?

Answer 20

• Easy to calculate

- Unrepresentative, only uses the 2 extreme values

Question 21

What does the Standard Deviation show?

Answer 21

How far values have deviated from the mean

Question 22

What are some aspects of Standard Deviations?

Answer 22

• Precise measure of dispersion

- Can be distorted by extreme values

Question 23

When is a Bar Chart used?

Answer 23

When discrete data is used (categorical)

Question 24

What are some features of a Normal Distribution?

Answer 24

• Symmetrical

- Mean/Median/Mode occupies the highest point

Question 25

What happens when a distribution is positively skewed?

Answer 25

- Distribution is concentrated to the left - Mode is at the highest point - Mean is at the lowest point

Question 26

What happens when a distribution is negatively skewed?

Answer 26

- Distribution is concentrated to the right - Mode is at the peak - Mean is at the lowest point