We looked at page 207 and discussed on how statistics help monitor the polar bear population, and how it can determine whether the population is stabilizing or taking a decline. We figured that by using inductive reasoning, one could predict the future outcome of the population.
Next, we looked at page 208 and 209 to apply our potentially new-found knowledge of mean, median, and mode values. The definitions for these terms are as follows:
Mean: A measure of central tendency determined by dividing the sum of all the values in a data set by the number of values in the set.
Median: A measure of central tendency represented by the middle value of an ordered data set.
Mode: A measure of central tendency represented by the value that occurs most often in a data set.
An example in which we can apply these terms is:
Let's say that this represents the size in cm of the diameter of school spheres. The mean is 47.857 cm (add the numbers up, 335, and divide by the amount of numbers, 7). The median is 50 cm (the middle column holds the 50 cm), and the mode is 20 (the only number repeated twice).
We also went over questions A-E on page 209. From doing so we learned about ranges (the difference between the maximum and the minimum value), outliers (a value in a data set that is very different from the others), utilized our knowledge about central tendencies to determine values for the 3 companies' salaries on page 208, and learned about line plots.
At the end of class, we were given our marks for our Oblique Triangle Trigonometry test, and were assigned the Chapter 5 diagnostic test, which was expected to be done by Monday.
The next person to make a blog will be Nina.
No comments:
Post a Comment