|
Monday:
Big Rocks: I can use measures of central tendencies to answer questions:
Vocabulary:
Mean :The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
Median: The median is also the number that is halfway into the set. To find the median, the data should be arranged in order from least to greatest. If there is an even number of items in the data set, then the median is found by taking the mean (average) of the two middlemost numbers.
Mode: The mode of a data set is the number that occurs most frequently in the set. To easily find the mode, put the numbers in order from least to greatest and count how many times each number occurs. The number that occurs the most is the mode!
Range: The range of a set of data is the difference between the highest and lowest values in the set. To find the range, first order the data from least to greatest. Then subtract the smallest value from the largest value in the set.
|
Bell Ringer: Spiral review 9
Classwork: https://www.youtube.com/watch?v=5C9LBF3b65s
Directions
For this activity, you will each be assigned a number, 1 through 4. You will then be separated into a home group where all four numbers are represented. That is, each group will have a one, a two, a three, and a four in it. In addition, your number determines which expert group you are in. For example, all the ones will be in expert group 1, all the twos will be in expert group 2, etc. Once you know who is in your home group, you should separate into your expert groups. Your responsibility as an expert is to learn the measure of central tendency assigned to you, either by looking in our textbook or browsing the web pages provided. You must make sure you understand your assigned topic well. Ask questions or request clarification from other members of your expert group. Experts must be able to explain the process in words, as well as provide one example to the other members of their home group. Once the expert groups have learned their material, everyone will separate back into their home groups. Each expert will teach their home group members about his or her assigned measure of central tendency, using at least one example.
Homework: Work on the IXL challenge or alternate assignment.
|
Additional Resources:
|
|
Tuesday:
Big Rocks: I can find the mean absolute deviation.
Mean Absolute Deviation, referred to as MAD, is a better measure of dispersion than the standard deviation when there are outliers in the data. An outlier is a data point which is far removed in value from the others in the data set. It is an unusually large or an unusually small value compared to the others.
Steps for finding: Mean Absolute Deviation
1. Find the mean of the data.
2.Subtract the mean from each value –the result is called the deviation from the mean.
3.Take the absolute value of each
deviation from the mean.
4. Find the sum of the absolute values.
5. Divide the total by the number of items.
|
Bell Ringer: Spiral Review 9
Classwork:
- https://www.youtube.com/watch?v=UBh48VErmZg\
- http://www.glencoe.com/sites/pdfs/impact_math/ls9_c1_mean_absolute_deviation.pdf
Homework: Work on the IXL challenge or alternate assignment.
|
|
|
Wednesday:
Big Rocks: I can use measures of central tendencies to answer questions:
|
Bell Ringer: put spiral review 9 on Socrative- Room rutherford811
Classwork: Finish mean, median, mode and MAD
take quiz.
Homework: Work on the IXL challenge or alternate assignment.
|
|
Comments (0)
You don't have permission to comment on this page.