Sarah Martelli

6 Questions 5 Answers 0 Followers

Questions related from Sarah Martelli

Samples by age grouping and statistical significance of data analysis ?

If one has a national sample constructed of 5 to 15 year olds, is it then possible to generate statisically significant analyses of sub-sets of this age grouping , say 5 to 10 year olds and 11 to...

03 March 2016 5,199 4 View

What are the ethical considerations of conducting surveys with children who have learning disabilities?

We are about to start a survey on violence against children - what are the ethical considerations of conducting surveys with a sample that may include children with learning disabilities? any...

10 October 2015 7,519 6 View

Survey sampling at regional level: is it unwise to select only a sample of districts within each region?

does this approach introduce serious biases in the results and make it difficult to calculate the sampling errors, unless one assumes that the districts not covered are similar to those that are...

09 September 2015 9,433 4 View

Is anyone familiar with household surveys on prevalence of child violence?

are there any methodological insights you could share?

05 May 2015 7,079 0 View

Is it possible to obtain different statistical significance results for independent variables for one way anova and univariate analysis ?

The tests use the same sample population , same independent variables but statistical significance results are different i.e. statistical significant for each independent variable when tested...

12 December 2014 1,090 13 View

I SPSS, does a scatter plot with no line of best fit mean no correlation?

I used SPSS to do a scatter plot for 2 continuous variables and obtained several horizontal lines - there does not seem to be a line of best fit, no positive or negative association, it is...

12 December 2014 3,973 7 View