# Artefact 1: Data analysis project

This section comprises of questions on material covered in the first week on Introduction to Quantitative Data Analysis and Descriptive statistics: chapters 2 to 5 of the book by Diamond and Jefferies. Marks for each question are indicated. You can present your answer in bullet points or full sentences:

21.What are the key features of a well presented table?(4 marks)
2.How should a time series graph be presented so that it does not mislead the reader?(3marks)
3.Nominal and ordinal variables fall under the category of discrete variables, but what is the main difference between these two types of variables? Mention two examples for each type.(3marks)
4.What is the best measure of central tendency to use if you have continuous data that is not normally distributed and why?(2marks)
5.Which of the following measures of spread is best to use when the mean does not equal the median and why?(2marks)
a.Interquartile range
b.Range
c.Standard deviation
d.Decile ratio
6.Enter data in Table 1 into SPSS following steps shown in SPSS exercise
1. (a) Provide appropriate names and labels for the variables and present a screenshot of the Variable view. (2 marks)
(b) Create a fifth variable named HDI_level that groups the countries into two groups of High HDI (0.851 to 0.957) and Low HDI (0.459 to 0.674) and obtain a frequency of the new variable. (2marks)
(c) What is the average mean years of schooling in the ten countries with high HDI? (2marks)
(d) What is the average life expectancy for the ten countries with low HDI? (2marks)(e) Comment on the standard deviations for the average life expectancy in the two groups of countries. (2marks

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