Spiders Webs' angles to the vertical of the Earth's surface are recorded. The following questions can be answered using the Histogram Applet The histogram displays the following 10 spiders web angle values: 25 12 31 26 17 15 24 10 16 12.
"histogram applet in the comment below"
1. Compute the sample mean and standard deviation of the web angle data. What is the sample size?
2. Is the distribution of web angles symmetric? Explain. Is the sample mean a good measure of the center of the distribution? Explain
3. Is there graphical and numerical evidence that the distribution of web angles is skewed? Explain. Contrast the sample mean and median for this data.
4. Compute the interval which contains observations within one standard deviation of the mean. Which web angles fall outside this interval? What proportion of the data lie within the interval?
5. What is the largest web angle? How many standard deviations does the maximum lie above the mean?