The mean
What is a mean ?
The average of some numbers.
What is the range of these numbers.
3, 4, 1, 7, 9, 7, 5, 6, 7, 4
8
What are the 3 types of average?
Mean, Mode and Median
Name 3 types of graphs
Examples: Column, bar, line, picture, graph, histogram, polygon, stem-and-leaf, dot plot, pie chart
What's Mr Porter's favourite NRL team?
Bulldogs
How do you find the mean?
Adding all data values together and dividing them by the amount of values in the data set.
What is the mode of these numbers ?
2, 5, 4, 7, 9, 1, 3, 4, 2, 3, 6, 7, 3
=3
Find the mode, median, mean and range of these numbers.
14, 13,9,3,7,5,2,17,20
Range=18
Mean=10
Median= 9
Mode= none
30% people love chocolate ice cream, 38.5% people love vanilla and 18% people love strawberry and 13.5% love rocky road ice cream. What graph best displays this information?
Pie chart
What it the world's largest living animal?
The blue whale
What is the mean of these numbers ?
5, 10, 5, 4
6
What is the median of these numbers ?
7,6,8,5,9,2,4,1
=5,5
Which example of statistics could we use to set your final grade?
mean
How would you identify the mode on histogram?
Measure for the tallest column using the values on the vertical axis.
What is the hardest natural substance found on Earth?
Diamond
What can we use this for in our daily lives.
To better understand and make statistics.
Findning the most common number is also called finding the
Mode
What do we use statistics for?
For analysis and better understanding data.
What is the difference between a histogram and a column graph?
A histogram has no gaps and represents continuous data
Which planet is 6th from the Sun?
Saturn
What is the mean of these numbers ?
7, 6, 9, 4, 6, 10, 11, 2, 3, 2, 6, 7, 3, 13, 1
6
Find the median range and mode of these numbers.
4,6,8,3,9,7,2,3,6,8,10,3
Median=6
Range=8
Mode=3
In which of these jobs do you not have to work with statistics? Math teacher, Financial manager, Taxi driver, Machine learning engineer.
You need statistics in all of these jobs.
What is the difference between a polygon and a line graph?
A polygon begins and ends on the horizontal axis
What do you call it when a caterpillar turns into a butterfly?
Metamorphosis