Statistics
For the survey question below, is the variable quantitative or categorical?
"What is your eye color?"
Categorical
6!
720
Solve ∛20x=-5
x=-25/4
What is the best estimate of value ln 26?
A. 1.64
B. 3.23
C. 2.77
D. 4.92
C. 2.77
What is the term for:
0th row:1st row:2nd row:3rd row:4th row:⋮
1
11
121
1331
14641
Pascal's Triangle
From a population of 1,600 cars, a sample of 25 is chosen. The dealer calculates the mean weight of those 25 cars. Tell whether this mean weight is an example of a statistic or parameter.
Statistic
4! + 3!
30
Solve √7x=14
x=28
What function is the inverse function of the exponential function y=3x
A. y=log3x
B. y=x3
C. y=3x
D. y=logx3
A. y=log3x
What is the term for :
2x-3=-7
equation
Determine if the following study has any bias,
The student council surveys every fifth student walking down the hallway with the following question:
"Do you agree school would be more enjoyable if there was recess?"
Bias
10!/6!
5040
Solve √x+1 + √x-4 = 5
x=8
Write the logarithm equation log864=2 in exponential form.
82=64
What is the term for:
ax2+bx+c=0
x= -b ± √(b2 - 4(a)(c))/2(a)
quadratic formula
Which question is a statistical question?
How old is Mr. Jones?
How many states has Juanita visited?
How many students are in Mrs. Brown class?
How many students eat lunch in the cafeteria each day?
How many students eat lunch in the cafeteria each day?
6!/(6-3)!
120
Solve the equation with rational exponents
(x2-x-29)3/4-10=17
x=11,-10
Find the equation of the inverse function
f(x)=log2(x-3).
f-1(x)=2x+3
What is the term for:
8x+4
binomial
All students who's ID numbers are divisible by 5 are asked about what music they like
The correct sampling model is?
Systematic
7!/(0!x4!)
210
Find an equation of the inverse function of f(x)= 1/2 ∛x
A. f-1(x)=1/2x3
B. f-1(x)= 8x3
C. f-1(x)= 1/8x3
D. f-1(x)= The function does not have an inverse
B. f-1(x)= 8x3
Find the equation of the inverse of f(x)=9log4(x+3)-6
f-1(x)=log9x-4
Numbers that include both real and the imaginary unit i, where i² = -1.
complex numbers