It would seem the problem requires you compute the mean, median, and standard deviation of each of the data sets. This is nicely done using the statistics functions of your graphing calculator.
Data Set A (mean, median, standard deviation) = (29.7, 29.5, √12.71)
Data Set B (mean, median, standard deviation) = (27.95, 27, √6.1475)
1. False. Data Set B is skewed to the right.
2. TRUE. 27.95 is within 3 of 29.7.
3. False. √12.71 ≠ √6.1475
4. False. The mean of Data Set A is 29.7.
5. False. Data Set A has the higher standard deviation.
6. TRUE. 29.7 is close to 29.5.
The true statements are
• the 2nd one
• the 6th one
So, it says that the Chavez family hikes the three shortest trails. Which ones in the chart are the three shortest trails? Second Beach (0.8), Third Beach (1.4), and Spruce Nature (1.25). Now add them all up to get the total distance they hike.
1.25+1.4+.8=?
Take the relative frequencies of each branch and multiply them together.
0.35 * 0.55 = 0.1925 or B
