Grade C Statistics facts. Flashcards
1
Q
The three types of averages are…
A
Mean. median and mode
2
Q
The mean of a set of numbers is found by…
A
Adding the numbers together and dividing by how many there are.
3
Q
The mode of a set of numbers is…
A
the one the occurs MOST often.
4
Q
The median is a set of numbers is…
A
The one in the MIDDLE (they must be in order!)
5
Q
Probability is a measure of chance. It is given as a number between…
A
zero and 1
6
Q
An impossible event has a probability of…
A
zero
7
Q
There is always a mark for the key on a…
A
stem and leaf diagram
8
Q
Interquartile range is…
A
The range between the 25% value and the 75% value
9
Q
Cumulative frequency…
A
is found by adding frequencies together as you go along
10
Q
If 2 events each have a probability of 0.5 this means..
A
they are equally likely.
