Numbers
A number that has place values less than 1.
What is a decimal number?
7=x+5
What is x=2?
A prism with a circular base
What is a cylinder?
The sum of all event probabilities
What is 1?
The number of elements in a sample
What is the sample size (n)?
A number that gives a remainder of 1 when divided by 2.
What is an odd number?
21=7x
What is x=3?
A shape with one pair of opposite parallel sides
What is a trapezium?
Pr(A) if Pr(A') = 0.7
What is 0.3?
The most common element in a sample
A number with a repeating digit sequence after the decimal point
What is a recurring decimal?
25 = 100/x
What is x=4?
An angle less than 90 degrees
What is an acute angle?
The number of trials represented by a probability tree with two outcomes, three layers deep.
What is 3?
It gives the mean, when divided by the sample size.
What is the sum of all data points?
A number that cannot be expressed as a fraction
What is an irrational number?
63=9x+18
What is x=5?
Two angles which add up to 180 degrees
What are complementary angles?
The number of people who don't play either instrument, if in a class of 22, 11 people play the piano, 10 play the guitar and 7 play both.
What is 8?
It is located at (n+1)/2 in a sorted list of data
Where is the median?
A number that exists on the standard number line.
What is a real number?
28=x^2 + 3
What is x = 5?
The shape whose volume is given by 4/3 pi r^3
What is a sphere?
The probability of drawing 2 red marbles in a row, from 3 red marbles, 2 blue marbles, drawn without replacement.
What is 3/10?
If most of the data points in a sample are low, and a small number are quite high.
What is positive skew?