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HSC Linear Relationships
HSC Data
Prelim Data
HSC Probability
Prelim Communication
100
A straight line passes through (0, 1) and (2, -2).

What is the gradient of this line?

(A) -3/2

(B) -2/3

(C) 2/3

(D) 3/2

(A) -3/2
100
What is the median of this data:

8, 9, 10, 6, 7, 7, 3, 4, 5, 5, 4, 4, 10

(A) 3

(B) 5.5

(C) 6

(D) 7

(C) 6
100
Which of the following is an example of a census?

(A) A newspaper conducts an opinion poll of 2000 people

(B) A product survey of 1000 homes to determine what brand of washing powder is used

(C) Every 200th jar of Vegemite is tested to see if it is the correct mass

(D) A federal election

(D) A federal election
100
There are 20 runners in a marathon. How many different selections are possible for first and second place? Assume there are no dead-heats.

(A) 39

(B) 190

(C) 380

(D) 400

(C) 380
100
Laura receives 25 MB of free data per month on her phone. Excess data is charged at a rate of 45c/MB. Calculate the cost if Laura has used a total of 40 MB of data.

(A) $29.25

(B) $6.75

(C) $18

(D) $11.25

(B) $6.75
200
A straight line passes through (0, 1) and (2, -2).

What is the y-intercept of this line?

(A) -2

(B) -1

(C) 1

(D) 2

(C) 1
200
A five-number summary of test results gives 15, 30, 60, 80, 95. What is the interquartile range?

(A) 25

(B) 40

(C) 50

(D) 60

(C) 50
200
Which of the following is an example of a random sample?

(A) The first 50 students to arrive at school take a survey

(B) Fifty students’ names are drawn from a hat and those drawn take the survey

(C) Ten students from each year of the school are asked to complete a survey

(D) One class in the school is asked to complete the survey

(B) Fifty students’ names are drawn from a hat and those drawn take the survey
200
A business has nominated the best five employees. There is a first prize and a second prize awarded to these employees. How many different selections are possible?

(A) 10

(B) 20

(C) 25

(D) 120

(B) 20
200
The RingMYBell phone company charges standard calls at 48c per 30 second block plus 42c flag fall. Calculate the cost of a 2 minute call.

(A) $1.38

(B) $2.34

(C) $3.60

(D) $1.80

(B) $2.34
300
A straight line has the equation of y = -x - 3. What is the y-intercept?

(A) -3

(B) -1

(C) +1

(D) 3

(A) -3
300
Sarah scored 48, 74, 89, 55, 64 and 89 in the Trial HSC exam. Which measure of location would Sarah prefer to tell her parents?

(A) Mean

(B) Median

(C) Mode

(D) Range

(C) Mode
300
Which of the following is an example of categorical data?

(A) The type of car that is in each home

(B) The number of cars in each home

(C) The distance travelled by a person’s car in a one year period

(D) The amount of money spent on petrol in a one year period

(A) The type of car that is in each home
300
Jasmine has two packets of jelly babies. Each packet contains two orange and four red jelly babies. Jasmine takes one jelly baby from each packet without looking. What is the probability both jelly babies are orange?

(A) 1/15

(B) 1/9

(C) 1/6

(D) 1/2

(B) 1/9
300
Use the RingMYBell plan on page 431 to state the amount of included data on the $60 plan.

(A) 200 MB

(B) 750 MB

(C) 1 GB

(D) 1.5 GB

(C) 1 GB