2. The Cornell Lab of Ornithology holds an annual Christmas Bird Count, in which birdwatchers 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 1999 event. 228 178 186 162 206 166 163 183 181 206 177 175 167 162 160 160 157 156 153 153 152 a) Create a stem-and-leaf plot for these data. b) Describe the shape of this distribution.
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Step 1:** Identify the minimum and maximum numbers in the data set: Minimum number = 152 Maximum number = 228 ** Show more…
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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 a recent event: 150 216 177 150 166 156 159 160 164 169 175 150 178 183 199 154 164 203 158 162 (a) Create a stemplot for this data using the 7 stems: 15 16 17 18 19 20 21. (5 points) (b) Based on your plot, how would you describe the shape of this data ? (5 points)
T. L.
Bird species 2013 The Cornell Lab of Ornithology holds an annual Christmas Bird Count (www.birdsource.org), in which bird watchers at various locations around the country see how many different species of birds they can spot. Here are the number of species counted from the 20 sites with the most species in 2013: a. Create a stem-and-leaf display of these data. b. Write a brief description of the distribution. Be sure to discuss the overall shape as well as any unusual features.
Displaying and Describing Data
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A researcher identifies a large isolated population of birds. There's no gene flow between this population and other populations, mating occurs randomly, and there are plenty of resources available to the population. A single gene controls whether the tail features of this bird are dark-on light-colored. The dominant dark allele is abbreviated T. The researcher observes 1,000 birds and sees only 90 with light-colored tail feathers. What are the frequencies of the TT, Tt, and tt genotypes? What is the frequency of T and t alleles? (Show working)
Keemin L.
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