Statistical Or Not
How many people in your class like to play video games?
Yes
Find the mean absolute deviation:
Round to the nearest tenth if needed
3,1,5,4,8,6
1.8
Find the mean, median, mode and range:
5, 28, 16, 32, 5, 16, 48, 29, 5, 35
Mean 21.9
Median 22
Mode 5
Range 43
Categorical or Quantitative?
The number of hours someone spends working out.
Quantitative
How much did you weigh when you were born?
No, it is only about you not a population or group.
Find the mean absolute deviation:
Round to the nearest tenth if needed
78,45,60,33,84
16.8
53, 13, 34, 41, 26, 61, 34, 13, 69
Mean 38.2
Median 34
Mode 13,34
Range 56
Categorical or Quantitative?
Each students favorite sport
Categorical
What are the students in your school's favorite place to travel?
Yes
Find the mean absolute deviation:
Round to the nearest tenth if needed
25,15,15,7
4
12, 46, 32, 18, 26, 41, 46
Mean 31.6
Median 32
Mode 46
Range 34
How do you find the IQR?
Q3 minus Q1
What is your favorite food?
No
Find the five number summary
42, 58, 67, 55, 40, 69, 66, 51, 46, 48, 68
Minimum 40
Maximum 69
Q1 46
Median 55
Q3 67
63, 40, 51, 70, 36, 21, 51, 28, 19
Mean 42.1
Median 40
Mode 51
Range 51
What do you do if you have two numbers left for median?
Add them together and divide by 2.
How many texts do the people in your family send?
Yes, it is about more than one person in your family.
Find the five number summary:
21, 4, 18, 9, 25, 16, 27, 30, 33, 15, 31
Minimum 4
Maximum 33
Q1 15
Median 21
Q3 30
40, 90, 36, 68, 90, 11, 88, 54
Mean 59.6
Median 61
Mode 90
Range 79
What are the steps to find the mean absolute deviation?
Step 1: Find the Mean
Step 2: Subtract all the data points from the mean (always make positive)
Step 3: Find the mean of your new values from step 2.