Probability

PROBABILITY

​What is probability?

• is the measure of how likely an event (Likelihood) is to occur

• kind of prediction

• chance of something happening

• Guessing base on general things (not basically)

A percentage represents "per hundred," meaning how many parts out of 100 something is.

​
It is denoted using the % symbol.

​What is percentage?

​Percentage to fraction and decimal

​5% =

25% =

50% =

8% =

95% =

0% =

75% =

Multiple Choice

What is probability?

• Probability is the certainty of an event happening.
• Probability is the total number of events that can occur.
• Probability is the measure of the likelihood of an event occurring.
• Probability is the average outcome of multiple events.

Multiple Choice

What is percentage?

• a type of currency.

• a measurement of length

• a statistical average.

• out of 100

Multiple Choice

27% to fraction

• 27/50

• 1/4
• 3/11
• 27/100

Multiple Choice

50% to fraction

• 2/5

• 1/2

• 3/10

• 50/1000

Multiple Choice

75% to decimal

• 0.075

• 1.75

• 0.75

• 7.5

Multiple Choice

6% to decimal

• 0.6

• 0.06

• 6.0
• 60.0

​Let's connect percentage and probability.

​How many percentage can happen in the following case?

​The sun rises from the west.

The next day of Monday is Tuesday.

The chance of getting head in a coin in a toss.

A student raising their hand to answer a question.

David has 3 eyes.

A student enter the classroom without knocking.

Wearing hat in our sport day.

A student skipping a class without permission.

​What can be the value of probability?

​Can probability express as number value?

Multiple Choice

25% of probability in words

• two out of five
• three out of ten
• one out of three
• one out of four

Multiple Choice

100% of probability in word

• possible
• unlikely
• certain
• impossible

Multiple Choice

50% of probability in word

• impossible

• unlikely
• certain
• even chance

Multiple Choice

75% of probability in word

• impossible

• likely

• certain
• even chance

• unlikely

Multiple Choice

50% of probability

• unlikely

• two-fifths
• half
• third
• likely

Multiple Choice

0% of probability in word

• impossible

• likely

• certain
• even chance

• unlikely

Multiple Choice

What is the probability?

• Probability is a value between 0 and 1 inclusive.

• Probability can be any negative number.
• Probability is always greater than 1.
• Probability is a fixed value of 0.5.

Fill in the Blank

The value of probability between ................... and .................... inclusive.

Multiple Choice

Getting a head turn in a coin.

• 0.3

• 75%

• one out of two

• certain

Multiple Choice

Getting number 2 in a dice rolling once

• 1/4
• 1/3
• 1/6
• 1/2

Multiple Choice

Getting even number in a dice rolling once

• 2 out of 6

• 5 out of 6

• unlikely

• 0.5

Multiple Choice

Getting prime number in a dice rolling once

• 2/6

• 4/6

• 0.25

• 0.5

Multiple Choice

There are 3 red cars, 2 yellow cars, 4 white cars and 1 green car. What is the probability of choosing a red car from them?

• 5 out of 10

• 1 out of 10

• 3 out of 10

• 4 out of 10

Multiple Choice

There are 3 red cars, 2 yellow cars, 4 white cars and 1 green car. What is the probability of choosing a black car from them?

• 1.5

• 1/5
• 0

• 1/2

Multiple Choice

There are 3 red cars, 2 yellow cars, 4 white cars and 1 green car. What is the probability of choosing a red or yellow car from them?

• 5 out of 10

• 1 out of 10

• 3 out of 10

• 4 out of 10

Multiple Choice

There are 3 red cars, 2 yellow cars, 4 white cars and 1 green car. What is the probability of choosing a green or yellow or white car from them?

• 0.7

• 0.9

• 0.6

• 0.8

Multiple Choice

If Team A and Team B play a 90 minutes friendly football match. What is the probability of winning a match for team A?

• 1/3

• 1/2

• No answer

• 75%