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4 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Challenges with statistics |
1. Biased sample 2. Small sample size 2. Biased (leading) questionnaire 3. Refusal of consent from respondents 4. No causality if no correlation |
Just the problems expected |
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What's the difference between grouped and ungrouped data? |
Grouped summarises continous data while ungrouped summarizes discrete data |
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State three rules of grouped data |
1. All class intervals should contain the same number 2. One number should not appear in two class intervals 3. Class intervals should be between 10 and 15, or atleast 5 |
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Compare and contrast histogram and bar chart |
SIMILARITIES 1. They all use vertical bars 2. Each of their bars consists of one class DIFFERENCE 1. The bars of a histogram are attached to each other while those of bar chart are not . |
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