1. Find the​ (a) mean,​ (b) median,​ (c) mode, and​ (d) midrangefor the given sample data.
An experiment was conducted to determine whether a deficiency ofcarbon dioxide in the soil affects the phenotype of peas. Listedbelow are the phenotype codes where1=smooth-yellow​,2=smooth-green​, 3=wrinkled-yellow​, and4=wrinkled-green.
Do the results make​ sense?
​(a) The mean phenotype code is _____.
2. Statistics are sometimes used to compare or identify authorsof different works. The lengths of the first 10 words in a book byTerry are listed with the first 10 words in a book by David. Findthe mean and median for each of the two​ samples, then compare thetwo sets of results.
​Terry: | 2 | 2 | 2 | 11 | 8 | 9 | 2 | 6 | 3 | 3 | |
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​David: | 3 | 4 | 3 | 2 | 3 | 1 | 3 | 1 | 4 | 3 |
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The mean number of letters per word in​ Terry's book is_____.
3. Refer to the data set of​ times, in​ minutes, required for anairplane to taxi out for​ takeoff, listed below. Find the mean andmedian. How is it helpful to find the​ mean?
36 | 35 | 25 | 11 | 26 | 29 | 30 | 32 | 19 | 39 | 45 | 31 | |
31 | 14 | 40 | 27 | 24 | 48 | 10 | 43 | 18 | 30 | 45 | 31 | |
13 | 34 | 17 | 16 | 23 | 40 | 47 | 31 | 27 | 34 | 17 | 47 | |
28 | 35 | 26 | 44 | 14 | 43 | 30 | 14 | 30 | 18 | 38 | 13 | |
Click the icon for the taxi out takeoff data.
Find the mean and median of the data set using a calculator orsimilar data analysis technology.
The mean of the data set is _____ minutes.
4. Find the mean of the data summarized in the given frequencydistribution. Compare the computed mean to the actual mean of 50.4miles per hour.
Speed​ (miles per​ hour) | 42−45 | 46−49 | 50−53 | 54−57 | 58−61 | |
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Frequency | 29 | 12 | 6 | 3 | 2 | |
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The mean of the frequency distribution is _____ miles perhour.
5.Six different​ second-year medical students at BellevueHospital measured the blood pressure of the same person. Thesystolic readings​ (in mmHg) are listed below. Find the​ range,variance, and standard deviation for the given sample data. If the​subject's blood pressure remains constant and the medical studentscorrectly apply the same measurement​ technique, what should be thevalue of the standard​ deviation?
126   126   138   125   137   134
Range= ______ mmHg
