Introductory statistics UE Past Papers Questions.

Explain briefly the four sampling methods

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Time magazine collected information on all 464 people who died from gunfire in the Philippines during one weak. Here are the ages of 50 men randomly selected from that population.

1. Construct frequency table
2. Compute mean, median, mode and standard deviation

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The mean and standard deviation of  a set of 100 observations were found to be 35 and 4 respectively. If the observations 39,32,34 were omitted from the 100 observations, find the mean and standard deviation of the remaining 97 observations.

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Calculate the mean, mode, median and standard deviation, range and interquartile range of the following items; 65, 55, 89, 56,35,14,56,55,87,45,92.

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The age and blood pressure of 10 women are:

1.  Compute correlation coefficient between blood pressure and age.
2. Compute coefficient of determination
3. Estimate linear regression of  blood pressure on age and state whether it is a good or poor fit.
4. Estimate the blood pressure of a woman whose age is 45 years.

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