Median
What is the first thing to do when finding the median:
Put the numbers into numerical order.
11, 17, 23, 22, 14, 16, 20, 12, 9. What is the range?
14
To find the mean we ___ up all the numbers and _________ by how many numbers there are.
Favourite book in a library?
Categorical.
There are 163 year 8 students. If I wanted to find 14% of 163, I would need to x 163 by what?
0.14
House prices (thousands): 358, 241, 406, 355, 257, 318, 329, 455, 300. Which is the median?
329
12, 4, 20, 13, 7, 12, 6, 8, 19, 22, 17, 15. What is the range?
18.
What is the mean number of siblings:
2, 0, 0, 3, 1, 0, 3, 2, 1, 0.
1.2
Your current body temperature?
Numerical.
What is 30% of 1 minute?
A. 15 seconds B. 18 seconds C. 20 seconds
B. 18 seconds.
Restaraunt bookings per hour: 28, 12, 19, 15, 20, 33, 17, 24, 21. What is the median?
20
Which has the larger range:
GROUP 1: 16, 40, 24, 28, 33, 36, 25.
GROUP 2: 45, 43, 27, 58, 36, 22, 39.
GROUP 2
The mean number of family pets:
1, 4, 3, 5, 1, 2, 7, 3, 6, 2
3.4
Average steps taken per day.
Numerical
50 women are surveyed. 22% prefer jam over peanut butter. What is 22% of 50?
11.
Monthly temperature: 27.4, 31.1, 30.4, 24.8, 19.6, 17.5, 12.8, 15.2, 20.4, 25.4, 28.9, 30.7. What is the median?
25
108, 72, 69, 44, 52, 40, 32, 54, 61. If the maximum is removed what is the range?
50.
Mean temperature, january 1 to 5 in Norway:
2, -1, -3, 2, -5
-1
Natural hair colour
Categorical.
15, 12, 10, 24, 18, 11, 16, 20, 5, 23, 16, 10. What is the a. mean and b. median?
a. 15. b. 15.5