4. A researcher gathered the following data on the number of home improvements projects undertaken in the past year for a sample of 25 households:

0	4	2	1	1	10	3	0	2	10	1	7	1
2	0	3	3	1	2	0	5	8	11	0	1

1. What is the unit of analysis?
2. What is the level of measurement? Draw an appropriate graph (line graph of histogram/bar chart) illustrating the survey results calculated in percentages.
3. What is the mode and the mean of the data?
4. Is the data skewed? If so, what is the skew? Explain how you came to that conclusion.