Tobacco and alcohol Are people who use tobacco prod-ucts more likely to consume alcohol? Here are data on household spending (in pounds) taken by the BritishGovernment on 11 regions in Great Britain. Do tobacco and alcohol spending appear to be related? What ques-tions do you have about these data? What conclusions can you draw? Region Alcohol TobaccoNorth 6.47 4.03Yorkshire 6.13 3.76Northeast 6.19 3.77East Midlands 4.89 3.34West Midlands 5.63 3.47East Anglia 4.52 2.92Southeast 5.89 3.20Southwest 4.79 2.71Wales 5.27 3.53Scotland 6.08 4.51Northern Ireland 4.02 4.56
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
ucts more likely to consume alcohol? Here are data on
Government on 11 regions in Great Britain. Do tobacco
tions do you have about these data? What conclusions
North 6.47 4.03
Yorkshire 6.13 3.76
Northeast 6.19 3.77
East Midlands 4.89 3.34
West Midlands 5.63 3.47
East Anglia 4.52 2.92
Southeast 5.89 3.20
Southwest 4.79 2.71
Wales 5.27 3.53
Scotland 6.08 4.51
Northern Ireland 4.02 4.56
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