- The following are the ages of a group of tourists visiting TheLibrary of Congress:
36, 38, 33, 44, 37, 37, 38, 34, 34,36, 34, 40, 42, 41, 35, 48, 31, 33, 46, 47, 33, 36, 37, 37, 34, 39,35, 37, 36, 39, 39
- Construct the Histogram of the ages with a class width of 5years.
- Find the mean of the dataset.
- Find the median of the dataset.
2. True or false - for the dataset: 13, 13, 15, 15, 16, 16, 16,17, 18, 22
- The maximum value of the dataset above is 22. If the analystmakes one mistake and record it as 2.2, then the mistake willchange the mean and the median of the dataset. Showcalculations.
- If the variance of a dataset is zero, then all observationsmust also be zero.
- The standard deviation of dataset cannot be negative.
- The variance of a dataset is always positive.
- The following graph have a negative correlation:
