Theoretical probability and relative frequency (Part 2)

Theoretical probability and relative frequency (Part 2)

Lesson details

Key learning points

  1. In this lesson, we will look in more detail at calculating theoretical probabilities and relative frequencies using spinners and worded problems.

Licence

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5 Questions

Q1.
I toss a coin 20 times. It comes up "Heads" 7 times. What is the relative frequency of getting a "Head"?
1
1/2
13/20
Correct answer: 7/20
Q2.
I roll a dice 60 times and I get a "three" on 10 occasions. What is the relative frequency of getting a "three"?
Correct answer: 1/6
3/10
3/6
3/60
Q3.
I roll a dice 50 times and it lands on a "six" 38 times. What is the relative frequency of getting a "six"?
0.38
Correct answer: 0.76
38
6
Q4.
I toss a coin 50 times and it comes up "Heads" 30 times. What is the relative frequency of getting "Tails"?
Correct answer: 2/5
20
3/5
30
Q5.
I flip a coin lots of times. I note that the relative frequency of getting "heads" is 0.45. What is the relative frequency of getting "tails"?
Correct answer: 0.55
45
55
Cannot say for certain

5 Questions

Q1.
Cala rolls a biased dice 40 times. It comes up with a three 14 times. Calculate the relative frequency of rolling a three.
0.14
Correct answer: 0.35
0.40
0.42
Q2.
Antoni throws a normal six-sided dice 120 times. How many times would you expect him to throw a 4?
Correct answer: 20
30
4
40
Q3.
Binh throws a biased dice 200 times. The theoretical probability of it landing on a 2 is 0.6. How many times would you expect her to throw a 2?
12
Correct answer: 120
20
35
Q4.
Xavier has a biased coin which has a 30% chance of landing on Heads. He flips the coin 300 times. How many times would you expect it to land on Tails?
0.7
Correct answer: 210
30
90
Q5.
Yasmin has 200 daisy seeds to plant in her garden. The probability of a daisy growing is 0.8. How many daisies would you expect to grow?
0.8
Correct answer: 160
40
80

Lesson appears in

UnitMaths / Probability