2. The Cornell Lab of Ornithology holds an annual Christmas Bird Count in which

Question

2. The Cornell Lab of Ornithology holds an annual Christmas Bird Count in which bird watchers at various locations around the country see how many different species of birds they can spot. Here are some of the counts reported from sites in Texas during the 2016 event. 150 150 150 154 156 158 159 160 164 164 166 169 175 177 178 183 199 203 216 231 22.93 The value of the mean x(bar) - 173.1, the standard deviation s, a. Construct a stem and leaf plot for the data. b. What is the shape of the distribution? c. Calculate the median. d. Calculate the Range e. Calculate the Q1 and Q3. f. Calculate the IQR. (10) g. Calculate Pearson's Index of Skewness. What does this index tell you about the shape of the distribution?

Explanation / Answer

Stem-and-leaf of x N = 20
Leaf Unit = 1.0

7 15 0004689
(5) 16 04469
8 17 578
5 18 3
4 19 9
3 20 3
2 21 6
1 22
1 23 1

e f g) we have used MINITAB software to make the answer here the answer is

Descriptive Statistics: x

Variable Q1 Q3 IQR Skewness
x 156.50 181.75 25.25 1.26

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