Data

Question 1

Quantitative data

Answer 1

• numerical data
• involves measuring something
• e.g How much? How often? Statistical analysis can be used. Collected in experiment based research methods

Question 2

Qualitative data

Answer 2

• non numerical data
• descriptive data
• e.g speech,text. Involves finding out what people think and how they feel. Often collected in case studies

Question 3

Averages

Answer 3

Mean - statistical average, add all the data then divide by the number of the data
Median - the central/middle value
Mode - the score that occurs most often

Range -range of data, the difference between the highest and the lowest

Question 4

Ways to display data

5 ways + type of data

Answer 4

• Bar chart (categoric)
• Histogram (continuous)
• pie chart (categoric)
• scattergrams (continuous)
• result tables (categoric)

Question 5

Describe Normal Distribution

Answer 5

The idea that most people will gain a score that centres on the mean. The mean,median and mode all occur at the same place, the peak of the curve

Question 6

Describe Negatively skewed distribution

With lots of outliers we get skewed distribution

Answer 6

• Higher on the axis (ceiling effect)
• contains more high scores then low ones
• the mean is the most affected as its the most sensitive

Question 7

Describe positively skewed distribution

With lots of outliers we get skewed distribution

Answer 7

• will contain more low scores then high ones
• floor effect
• most scores will fall beneath the mean