DIGS STATS

The Three Activities from DIGSTATS


Cigarettes  
1. Which has the smaller standard deviation?
Nicotine
Tar: 5.66
Nicotine: 0.35
Weight: 0.0859491602
CO (mg): 4.74

2. What is the range for the tar?
28.8

3. What is the range for the nicotine?
1.9

4. Which data set, the tar or the nicotine, has data points that tend to cluster around its mean?
Nicotine

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Windspeed
1. What is the mean?
10.97

2. What is the standard deviation?
6.39

3. What is the 95% confidence interval?


4. Would the confidence interval become wider or more narrow, if the confidence level was 90%?

5. What is the primary reason the interval is the width that it is?
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Geyser

1. What is the mean duration of the eruptions?
3.58

2. Is the median duration much different from the mean duration?
The median duration is not much different from the mean duration.

3. What is the most frequent length of the eruptions?
4.3

4. If you went to Yellowstone National Park to see Old Faithful, how long would you have to wait between eruptions of the geyser?






(DIGSTATS/ Partner: Sandy V./ work done with an IT 84 graphing calculator)