What is the term for the likelihood of an event?
Probability
What is the Relative Frequency for ELECTRICITY:
*Round to 2 decimal places
20/(120)=0.17
How many students got an A in the class H1 101?
12
A bag of marbles has...
3 red
2 green
5 blue
What is the probability of drawing a red or a green marble? (as a reduced fraction)
3/10+2/10=5/(10)=1/2
The dot plot shows the number of cups of coffee ordered by each customer.
What is the mode?
5 cups of coffee
When collecting data, what is the name for a small portion of the population?
A sample
What is the Relative Frequency of GRAVITY:
*Round to 2 decimal places
18/(120)=0.15
Which class had more students, H1 101 or H1 102?
H1 102
A bag of marbles has...
3 red
2 green
5 blue
What is the probability of drawing a red or a blue marble? (as a reduced fraction)
3/10+5/10=8/10=4/5
The dot plot shows how many books were read.
What is the mode?
5 books.
What is the name for a collection of facts and information?
Data
The table below shows the animals observed at a lake.
What is the probability that you will see a RABBIT?
*Round to 2 decimal places
19/(74)=0.26
The table below shows the number of vehicles that went through intersections with traffic lights.
What is the probability that an intersection will have at least 71 vehicles pass through it?
26.9%
A bag of marbles has...
3 red
2 green
5 blue
What is the probability of drawing a red marble and then a blue marble when the first marble is replaced? (as a reduced fraction)
3/10*5/10=3/20
The following is a ranked dataset.
What is the median?
9, 10, 12, 14, 15, 16, 18
14
Mean and median are two examples of what?
Measures of center
The table below shows the animals observed at a lake.
What is the probability that you will see a BIRD or a DEER?
*Round to 2 decimal places
(30+8)/(74)=38/74=0.51
The table below shows the number of vehicles that went through intersections with traffic lights.
What is the probability that an intersection will have at 50 or fewer vehicles pass through it?
15.4% + 23.1% = 38.5%
A bag of marbles has...
3 red
2 green
5 blue
What is the probability of drawing a green marble and then a red marble after replacing the first marble? (as a reduced fraction)
2/10*3/10=3/50
The following is a ranked dataset.
What is the median?
12, 14, 14, 16, 19, 22, 27, 28
17.5
What is the name of a data value that is significantly different from the rest of the data values?
An outlier
The following table shows the number of students receiving each letter grade in 2 different classes.
In which class did a higher rate of students get a B?
H1 102:
140/(280)=0.5
H1 101:
24/(60)=0.4
The following table shows what customers ordered with their coffee.
What is the probability that a customer will order nothing, a bagel or a muffin with their coffee?
34.4% + 14.1% + 20.3% = 68.8%
A bag of marbles has...
3 red
2 green
5 blue
What is the probability of drawing a red marble, and then a blue marble and then a green marble? (as a reduced fraction)
3/10*2/10*5/10=3/100
The following is a ranked dataset.
12, 14, 14, 16, 19, 22, 27, 28
The sum is 152.
What is the mean?
152/(8)=19