Data Analysis
Rates and Ratios
Your Teachers
Rates and Ratios
Probability
100

What's the definition of the MODE of a dataset?

Difference between the highest and the lowest value.

100

Is 5km/hr a RATE or a RATIO?

Rate (different units of measurement)

100

What other subject is Ms Craft qualified to teach?

PE

100

I need 250g of flour to make 15 scones.  How much flour do I need to make 30 scones? 

500g

100

What's the probability of rolling a 2 on a fair die?

1/6

200

What's the MODE of:  1, 5, 5, 2, 8, 5, 9, 5, 5

5 (most frequent)

200

I have 3 green apples and 4 red apples.  Write a ratio of green: red apples.

3:4

200

How many children do Ms Craft and Ms O'Neill each have?

Ms Craft has 2 sons, and Ms O'Neill has 1 son.

200

The ratio 1:5 is equivalent to ? :10 (find ?).

? = 2

200
The probability of it raining tomorrow is 20%.  What's the complementary probability?

80% (100%-20%)

300

What's the MEDIAN of: 1,3,5,7,9,11

6

300

In the last week it's rained 5 days.  What's the ratio of rainy days to TOTAL days?

5:7

300

Where did Ms O'Neill work for 20+ years before becoming a teacher?

Australian Tax Office (originally as a mathematician).

300

1 mile is approx. 1.4 km.  

How many kms are in 3 miles?

4.2 

(3 x 1.4 = 4.2)

300

What's the SAMPLE SPACE of the word WEDNESDAY?

S = {A,D,E,N,S,W,Y}
400

The lowest number in a dataset is -2.  The range is 6. What's the highest number?

4

400

Simplify 15:25 to its simplest form.

3:5

400
Ms O'Neill has trekked to the base of which mountain?

Mount Everest

400

6 Litres of petrol costs $12.  How much does 5 Litres cost?

$10

400

What's the probability of rolling an EVEN number on a fair die?

3/6 = 1/2  or  50%

500

Find the mean: 

4, 5, 9, 2

5

500

I travel at 100km/hr.  How far to I travel in 1.5 hours?

150 km.

500

Ms Craft appears in a YouTube video! What's it about?

It shows her crashing and rolling a racing car!

500

In a classroom, the ratio of boys to girls is 3:2.  There's 12 boys.  How many girls?

8

500
A bag has blue, red and yellow marbles.  P(blue) = 0.2, P(red) = 0.2  What is P(yellow)?
0.6