1. What does the sigma, E and numbers mean in a summation equation?
- Sigma= sum, E= equal and the number represents how many to multiple by
- Sigma= sum, E= algebra and the number shows the ranking of data
- Sigma= sum, E= quantity and the numbers represent the reference number
- Sigma= sum, E= equation and the number are the values
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2. What is nominal data?
- Where you rank items that you measure depending on which has a more or less of an influence that we want to measure. Intervals are not necessarily equal and there is not true zero point
- Where you allocate a score to a category and it indicates a group of data
- Where there are equal intervals of data on a continuous numerical scale, eg: farenheit
- Where there are equal intervals between the data and an absolute zero, eg: time
3. Which statistic is more sensitive to extreme values?
- The mode and not the mean or median
- The mean and not the median or mode
- The median and not the range or mode
- The range and not the median or mode
4. Which is not a characteristic of a histogram?
- The legend that shows the sample size, mean and standard deviation
- The x axis shows the bins of nominal data
- The y axis shows the bins of nominal data
- The y axis shows how many data points fall in each bin
5. Which statement is incorrect about confidence intervals?
- The 95% is more wider than the 99%
- As the range/interval gets wider we get more confident that the real values lie within the range
- There are many different confidence intervals where they have own level of confidence attached