Knowledge of probability, statistics, and data interpretation - FTCE
Card 1 of 8
What is the likelihood, expressed as a percentage, of rolling 2 straight 2s using one 6-sided dice?
What is the likelihood, expressed as a percentage, of rolling 2 straight 2s using one 6-sided dice?
Tap to reveal answer
The likelihood of rolling any given number on a 6-sided dice is 16.6%, to get the likelihood of that even happening twice in a row, simply multiply 16.6% by itself, to get 2.7%, rounded up to 3%
The likelihood of rolling any given number on a 6-sided dice is 16.6%, to get the likelihood of that even happening twice in a row, simply multiply 16.6% by itself, to get 2.7%, rounded up to 3%
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A set of ten scores has mean 30.
Nine of the scores are given below, with the circle representing the tenth.
What is the tenth score?
A set of ten scores has mean 30.
Nine of the scores are given below, with the circle representing the tenth.
What is the tenth score?
Tap to reveal answer
The mean of a group of scores 
is equal to their sum 
divided by the number of scores 
, or,
Set 
and 
, and solve for 
:
Multiply both sides by 10 to reverse division by 10:
The sum of the scores must be 300. Add the known scores:
Subtract this sum from 300:
,
the missing tenth score.
The mean of a group of scores
Set
Multiply both sides by 10 to reverse division by 10:
The sum of the scores must be 300. Add the known scores:
Subtract this sum from 300:
the missing tenth score.
← Didn't Know|Knew It →
What is the likelihood, expressed as a percentage, of rolling 2 straight 2s using one 6-sided dice?
What is the likelihood, expressed as a percentage, of rolling 2 straight 2s using one 6-sided dice?
Tap to reveal answer
The likelihood of rolling any given number on a 6-sided dice is 16.6%, to get the likelihood of that even happening twice in a row, simply multiply 16.6% by itself, to get 2.7%, rounded up to 3%
The likelihood of rolling any given number on a 6-sided dice is 16.6%, to get the likelihood of that even happening twice in a row, simply multiply 16.6% by itself, to get 2.7%, rounded up to 3%
← Didn't Know|Knew It →
A set of ten scores has mean 30.
Nine of the scores are given below, with the circle representing the tenth.
What is the tenth score?
A set of ten scores has mean 30.
Nine of the scores are given below, with the circle representing the tenth.
What is the tenth score?
Tap to reveal answer
The mean of a group of scores is equal to their sum divided by the number of scores , or,
Set and , and solve for :
Multiply both sides by 10 to reverse division by 10:
The sum of the scores must be 300. Add the known scores:
Subtract this sum from 300:
,
the missing tenth score.
The mean of a group of scores
Set
Multiply both sides by 10 to reverse division by 10:
The sum of the scores must be 300. Add the known scores:
Subtract this sum from 300:
the missing tenth score.
← Didn't Know|Knew It →
What is the likelihood, expressed as a percentage, of rolling 2 straight 2s using one 6-sided dice?
What is the likelihood, expressed as a percentage, of rolling 2 straight 2s using one 6-sided dice?
Tap to reveal answer
The likelihood of rolling any given number on a 6-sided dice is 16.6%, to get the likelihood of that even happening twice in a row, simply multiply 16.6% by itself, to get 2.7%, rounded up to 3%
The likelihood of rolling any given number on a 6-sided dice is 16.6%, to get the likelihood of that even happening twice in a row, simply multiply 16.6% by itself, to get 2.7%, rounded up to 3%
← Didn't Know|Knew It →
A set of ten scores has mean 30.
Nine of the scores are given below, with the circle representing the tenth.
What is the tenth score?
A set of ten scores has mean 30.
Nine of the scores are given below, with the circle representing the tenth.
What is the tenth score?
Tap to reveal answer
The mean of a group of scores is equal to their sum divided by the number of scores , or,
Set and , and solve for :
Multiply both sides by 10 to reverse division by 10:
The sum of the scores must be 300. Add the known scores:
Subtract this sum from 300:
,
the missing tenth score.
The mean of a group of scores
Set
Multiply both sides by 10 to reverse division by 10:
The sum of the scores must be 300. Add the known scores:
Subtract this sum from 300:
the missing tenth score.
← Didn't Know|Knew It →
What is the likelihood, expressed as a percentage, of rolling 2 straight 2s using one 6-sided dice?
What is the likelihood, expressed as a percentage, of rolling 2 straight 2s using one 6-sided dice?
Tap to reveal answer
The likelihood of rolling any given number on a 6-sided dice is 16.6%, to get the likelihood of that even happening twice in a row, simply multiply 16.6% by itself, to get 2.7%, rounded up to 3%
The likelihood of rolling any given number on a 6-sided dice is 16.6%, to get the likelihood of that even happening twice in a row, simply multiply 16.6% by itself, to get 2.7%, rounded up to 3%
← Didn't Know|Knew It →
A set of ten scores has mean 30.
Nine of the scores are given below, with the circle representing the tenth.
What is the tenth score?
A set of ten scores has mean 30.
Nine of the scores are given below, with the circle representing the tenth.
What is the tenth score?
Tap to reveal answer
The mean of a group of scores is equal to their sum divided by the number of scores , or,
Set and , and solve for :
Multiply both sides by 10 to reverse division by 10:
The sum of the scores must be 300. Add the known scores:
Subtract this sum from 300:
,
the missing tenth score.
The mean of a group of scores
Set
Multiply both sides by 10 to reverse division by 10:
The sum of the scores must be 300. Add the known scores:
Subtract this sum from 300:
the missing tenth score.
← Didn't Know|Knew It →