1.What are the mean, median, mode, and range of the data set given the altitude of lakes in feet:
-12,-9,-14,-39,-49,-49,-18, and -43?
https://www.google.com/search?source=hp&ei=wiemXJ420N61BfrFudAF&q=mean%2C+median%2C+mode%2C+range&btnK=Google+Search&oq=mean%2C+median%2C+mode%2C+range&gs_l=psy-ab.3..0l10.14076.25185..25392...2.0..0.107.2521.23j4......0....2j1..gws-wiz.....0..0i131j0i10.dyK1MRPKwoA
thx ms sue u da best
You're welcome. :-)
To find the mean, median, mode, and range of the given data set, you can follow these steps:
1. Mean: The mean is the average of all the values in the data set. To calculate the mean, add up all the values in the data set and divide the sum by the total number of values. In this case, the sum of the data set is -12 + -9 + -14 + -39 + -49 + -49 + -18 + -43 = -233. Since there are 8 values in the data set, you divide -233 by 8 to get the mean: -233/8 = -29.125.
2. Median: The median is the middle value in a data set when the values are arranged in ascending or descending order. To find the median, first sort the data set in ascending order: -49, -49, -43, -39, -18, -14, -12, -9. As there are 8 values in the data set, the middle two values are the 4th and 5th values. In this case, the median is the average of -39 and -18, which is (-39 + -18) / 2 = -57 / 2 = -28.5.
3. Mode: The mode is the value(s) that appear most frequently in a data set. In this case, the mode of the data set is -49. It appears twice, more than any other value.
4. Range: The range is the difference between the highest and lowest values in a data set. To find the range, subtract the smallest value from the largest value. In this case, the smallest value is -49 and the largest value is -9. So, the range is -9 - (-49) = -9 + 49 = 40.
Therefore, the mean is -29.125, the median is -28.5, the mode is -49, and the range is 40.