Practice More Questions From: Week 3 Graded Quiz
Q:
Read the article linked here: http://www.samj.org.za/index.php/samj/article/view/9298/6855 The researchers were concerned that the reference values for common blood cell counts used by South African laboratories were taken from research conducted on samples taken from population that did not reflect (could not be inferred to) the local population.Answer this question and those that follow. What type of study was this?
Q:
The method of dispersion used to describe the age variable in this study was the range. What does range refer to?
Q:
The blood samples were stored at 20 degrees Celsius, with a standard deviation of 4 degrees Celsius. If the data point values were normally distributed, with no statistical outliers, what does this imply?
Q:
In Table 1 the (median) values for the first variable, RBCs (red blood cells), is expressed in cells (times 10 to the power 12) per liter of blood. What data type value is represented here?
Q:
The measure of central tendency used to describe the number of each cell type is the median. Consider the distribution of the actual data point values.
Q:
To be entered into the study, participants had to be healthy. One of the criteria for classification as healthy was no prescribed medication (the baby / child should not be on any medication). If the data entry tool identified children that were not on medication as 0 (zero) and those on medication as 1 (one). Identify the data type for this variable.
Q:
Consider a possible follow-up study to this research, in which the same children were to be re-evaluated in five and again in 10 years. In the follow-up study researchers looked at their educational success and rates of certain illnesses. What study type would this represent.
Q:
The participants in this cross-sectional study were taken from the health clinics in one of the numerous informal settlements around a large city. What sampling technique would be describe this selection.
Q:
A p-value: Multiple options are correct. Please select all that apply.
Q:
If there are five equally possible outcomes to an experiment, which are marked, in order, A, B, C, D, and E, what is the probability of finding a result of either D or E?
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