The mean score for the first 4
rolls of dice are 3.5
The mean score for the next 6 rolls
of the dice is 4.5
Work out the mean score for all 10
rolls of the dice.
4.1
Oops!
Check
Okay!
Check
15
In a set of three integers, the
mean of the first two is 2, the mean of
the last two is 3, and the mean of the
first and the last is 4.
What are the three integers?
3,1,5
Oops!
Check
Okay!
Check
thief
Give points!
5
10
15
20
25
magnet
Take 25 points!
Okay!
gift
Win 20 points!
Okay!
lifesaver
Give 10 points!
Oops!
15
The mean height of five players
in a basketball team is 185 cm.
When a player of height 183 cm is
substituted, the mean height of the
the team goes down to 181 cm.
How tall is the substitute player?
163
Oops!
Check
Okay!
Check
thief
Give points!
5
10
15
20
25
shark
Other team loses 20 points!
Okay!
gift
Win 25 points!
Okay!
banana
Go to last place!
Oops!
15
Six positive integers have a
range of 13. The integers are:
5, 9, 7, 12, 3, x
Find the value of x
16
Oops!
Check
Okay!
Check
10
Find the mean of:
โ3, 4, 7, 0, 2
2
Oops!
Check
Okay!
Check
15
In a set of three integers, the
first is twice the second and the
second is twice the third.
The mean of the three integers is 14.
Find the values of the three integers.
24,12,6
Oops!
Check
Okay!
Check
15
a, b, c and d are four integers.
Their mode is 5
Their mean is 7
Their median is 5.5
Find the values of the four integers.
5,5,6,12
Oops!
Check
Okay!
Check
5
Find the mode of:
4, 2, 7, 3, 4, 3, 5, 3, 2, 7, 3
3
Oops!
Check
Okay!
Check
15
Three positive integers have a
mean of 5 and a range of 10.
Find the values of the three integers.
1,3,11
Oops!
Check
Okay!
Check
monster
Reset all scores!
Oops!
fairy
Take points!
5
10
15
20
25
shark
Other team loses 20 points!
Okay!
banana
Go to last place!
Oops!
5
Find the mean of:
7, 1, 4, 6
4.5
Oops!
Check
Okay!
Check
15
After 4 tests, Patโs mean score
is 82%.
How much must Pat score in her 5th
test if she wants to increase her
mean score to 85%?