Quantitative methods CRN:17725

15 credits

Unit convenor: Mike fletcher

Dates: 24 April 2007 – 12 June 2007

Assignment Requirements:

Students will be required to demonstrae a knowledge of experimental and correlational techniques.

Assignment submission date: 26 June 2007

[24 April 2007 – Session 1](Missed)

[01 May 2007 – Session 2]

• Histogram
• Survey:

1. Block graph – qualitative variables
2. Bar-line graph – discrete variables
3. Histogram – continuous variables
4. Pie chart – useful for showing proportions
5. Box plot – useful for comparing two data sets
6. Stem and leaf diagram – keeps all the original data

Box plot:

• Displays the median, upper and lower qurtiles and the highest and lowest values.

e.g.: The test scores of 15 boys are: 12, 25, 34, 37, 46, 47, 56, 57, 61, 63, 67, 70, 75, 83.

1. The median is 56
2. The lower quartile is 37
3. The uper quartile is 67

Box plot:

STEM and LEAF diagram:

• Decide on the question you want the answer to
• Collect the appropriate data
• Display the data in an appropriate way
• Calculate the appropriate statistics
• If necessary, find the significance of the statistics

Next week:

• Work with paper and pencil again, and the following week go to SPSS.