Measures of central tendency
what is the mean:4,7,12,10,2,
7
34,56,16,39,10,52 what is the range
46
There are fifteen marbles in a bag.
9 are yellow
3 are purple
3 are red
What is the probability of choosing a yellow marble?
9/15 or 3/5
What is the lowest prime number?
two
Evaluate 52
25
What is the mode?
12,5,18,10,12,14,17,
12,13,11,45
12
35% of _______ is 280
800
What is the probability of rolling a six sided die and landing on an even number?
1/2
Is 51 prime or composite?
Composite. 51=3x17
Evaluate 6-2
1/36
What is the mean?
12,3,7,10,23,39,2,4
12.5
A machine can fill 650 bottles in 25 minutes. What is the unit rate at which the machine can fill bottles?
26 bottles per minute
What is the probability of pulling spade within a 52 deck of cards?
13/52 or 1/4
Find the reciprocal of 3
What is 1/3
Multiply 53 x 54
57
What is the median?
61,42,73,98,102,67
70
Which has a greater probability
Rolling doubles on two six-sided dice or rolling doubles on two ten-sided dice?
p(doubles on six-sided) =1/6
which is more likely than
p(doubles on ten-sided) = 1/10
What is more likely to happen? Pulling a red card from a deck of cards or rolling a 1 or a 2 on a six sided die?
pulling a red card 13/52
1 or 2 = 1/3
1 or 2 is more likely
What is the greatest common factor of 24 and 36?
24 factors are 1,2,3,4,6,8,12,24
36 factors are 1,2,3,4,6,9,12,18,36
GCF = 12
Evaluate 6m + 8/n for n = 4 and m = 3
20
What is the median?
5,8,14,45,72,198
29.5
sqrt36
6
If you roll two six-sided dice, what is the probability of rolling a product of six?
15/36 or about 41.7%
How do you solve a factorial like 3!
3 x 2 x 1 = 6
multiply all numbers from that number down to 1
Solve 3x + 4 = 19
x = 5