Calculate that Percent!
10 of 20 is what percent
50%
The definition of sample related to taking data
What is a set of data from a population smaller than total population. Ex: 20 Mack students surveyed on best time of day to take math to get an idea of what total Mack population believes.
Definition of "mean" as related to average and how to find it.
Mean is the average found by adding up all values and dividing by number of values present.
In dot plot on board, what does each represent?
One student or person
15 of 20 is what percent
75%
Shae surveyed 20 Mack students on if they would like to have math the class period right after lunch. 5 said yes. If there are 150 Mack students, estimate how many would be in favor of having math right after lunch.
Answers may vary. 5/20 is 25%. 25% of 150 is 37. Will accept answers 30-40 students.
Find mean of this data set: 1, 2, 10, 21, 2, 3, 8. Round to nearest tenth. You may use a calculator.
47/7 = 6.7
Number of students who made 5 free throws
2
17 of 20 is what percent
85%
Owne surveyed 40 Mack students on if they would like to have math the class period right after Morning Meeting. 25 said yes. If there are 150 Mack students, estimate how many would be in favor of having math right after lunch.
Answers may vary. 25/40 is 62.5%. 62.5% of 150 is about 94. Will accept 90-100 students.
Definition of mode (hint: not ice cream)
The value that appears the most often in a set of data
Number of students who made 4 free throws
0
Students in Ryan's PE class are expected to be able to do 5 pushups. Elyse did 7. What percentage of expected pushups did she complete?
140%
Why is using a sample rather than the whole population useful? Give an example of when polling a whole population might be tricky.
Sampling is more doable/feasible. Sometimes populations are too big. For example, if we wanted to see how many 13 year olds in the world like macaroni and cheese, it would be hard to reach out to every single person with that age.
Find the mode of this set of data: 1, 2, 10, 21, 2, 3, 8
2
Number of students who made less than 4 free throws
6
Find the median of this set of data: 1, 2, 10, 21, 2, 3, 8
Must rearrange the numbers so that they are in order from lowest to highest. Median is 3