Counting Strategies
Counting strategy is used to calculate things in order.
What is Permutation?
What is the mean and median?
The mean is the average number./The median is the middle number.
What percentages are the ones between the mean?
34%
What does it mean to have a negative Z score?
It means to be below the average.
solve |2x-5|=9
x=7 or x=-2
Counting strategy is used to calculate things outside of order.
What is Combination?
How do you find both mean and median?
Mean is all numbers added and divided by the amount of numbers./Median is the middle number when sorted from lowest to highest.(If 2 numbers still stand, divide by 2.)
How do you calculate the mean?
add up all the numbers and divide by how many there are.
What formula is used to get a Z score?
Z= X-M/σ
A student receives the following scores on seven math quizzes:
85, 92, 76, 92, 88, 95, 70
What is the mean quiz score?
85.4
Variable used to represent all numbers in a set.
What is n?
Find the median: 34, 56, 34, 22, 11, 43 75, 48, 85, 76
45.5
What is the least number of percentage?
.15%
What are the percents on a standard bell curve chart?
0.15%,2.35%,13.5%,34%,34%,13.5%,2.35%,0.15%
+-4i
What is Factorial?
What is the standard deviation?
The standard deviation is a number that tells you how spread out a group of numbers are by their average.
What is the normal distribution graph shape called?
Bell shape
Gas prices have remained the same for 6 months. The price of gas for the first 5 months was $3.88 per gallon. What was the gas price of gas of the 6th month if the standard deviation was 0?
2x^2+50=0
+-5i
How many ways are there to arrange 1st 2nd and 3rd place with 50 different students.
What is 117600?
Find the standard deviation: 45, 23, 75, 78, 98, 43, 7, 65, 37
27.3
how do you find the other numbers outside the mean?
Suppose the mean of a cat's weight is 9.7 pounds with a standard deviation of 1.5. what is the weight of a cat that is 2 standard deviations higher than the average.
x^2-5x+6=0
x=2 or x=3