Linear Relationships
Given the linear equation y=2x-1 what is the value of the y-intercept?
-1
x+4=9
x=5
the middle value in an ordered set
A fair coin is flipped. What is the probability that it lands on heads?
0.5
yes
Given the linear equation y=2x-1 what is the value of the x-intercept?
1/2
x=7
What does the third quartile of a dataset represent?
the 75th percentile
A standard 6-sided die is rolled. What is the probability of rolling a number greater than 4?
1/3
1+1=
Does the point (2, 3) fall on the line y=3x-3
yes
2x+3=17
x=7
How do we calculate the IQR of a dataset?
Q3-Q1
A fair 6-sided die is rolled. What is the probability of rolling a prime number?
2/3
What is the HCF of 21 and 56?
7
Does the point (1,-1) fall on the line y=-1/2x-1
no
3x-5=2x+10
x=15
What would the formula Q1-1.5(IQR) determine?
The lower limit of a dataset
A fair 8-sided die is rolled. What is the probability of rolling a number that is a multiple of 3?
1/4
How many significant figures are there in the number 301200
4
The orientation of an undefined gradient will be perfectly...
vertical
12/x+3=9
x=2
Standard deviation is...
the average distance from an randomly chosen data point in a set from the mean
Three fair 6-sided dice are rolled. What is the probability that at least one die shows a 6?
0.42
Is this number very large or very small? 2.1x10^-23
very small