1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Setler79 [48]
2 years ago
10

Factors that are unequal across groups and can prevent a researcher from concluding that it was the independent variable that ca

used a change in the dependent variable are called _____ variables.
Mathematics
1 answer:
bezimeni [28]2 years ago
4 0

The independent variable that caused a change in the dependent variable is called cofounding variable.

Given the Factors that are unequal across groups and can prevent a researcher from concluding that it was the independent variable that caused a change in the dependent variable are called _____ variables.

These are variables in statistics other than the dependent and independent variables which can also be important to a researcher because it affects the dependent variable.

Confounding variables can also be called influences, external factors or third variables because they mostly affect the outcome of a research and prevent a researcher from achieving its objectives.

Hence, Factors that are unequal across groups and can prevent a researcher from concluding that it was the independent variable that caused a change in the dependent variable are called cofounding variables.

Learn more about cofounding variable from here brainly.com/question/9403412

#SPJ4

You might be interested in
Help me on this please
Solnce55 [7]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Peg and Larry purchased “no contract” cell phones. Pegs phone costs $25 plus $0.25 per minute. Larry’s phone cost $35 plus $0.20
marissa [1.9K]
Let x be the number of minutes Peg and Larry used their phones. So their costs can be written as:

Cost of Peg's Phone usage = 25 + 0.25x
Cost of Larry's Phone usage = 35 + 0.20x

We are to find when the Peg's phone will be more than Larry's phone. We can set up the inequality as:

25 + 0.25x > 35 + 0.20x

Re-arranging the inequality

0.25x - 0.20x > 35 - 25

0.05x > 10

x > 10/0.05

x > 200

Thus, Pag's phone will cost more if the number of minutes of phone usage is more than 200
5 0
3 years ago
Solve for the missing angle (this is my last question and i just don’t wanna get it wrong)
AnnZ [28]

Answer:

<h2>x = 152°</h2><h2>________________</h2>

<u>Step-by-step explanation:</u>

<h3>Δx = 85° + 67°</h3><h3>Δx = 152°</h3><h2>________________</h2><h2>FOLLOW ME</h2>
4 0
3 years ago
Read 2 more answers
A large restaurant chain is curious what proportion of their customers in a given day are new customers. They are thinking of ta
Ira Lisetskai [31]

Answer:

none of the above

6 0
3 years ago
Given the parametric equations x = 2sint and y = -3cost on 0 ≤ t ≤ π. convert to a rectangular equation and sketch the curve
Temka [501]

The rectangular equation for given parametric equations x = 2sin(t) and   y = -3cos(t) on 0 ≤ t ≤ π is  \frac{x^{2} }{4} +\frac{y^2}{9} =1 which is an ellipse.

For given question,

We have been given a pair of parametric equations x = 2sin(t) and           y = -3cos(t) on 0 ≤ t ≤ π.

We need to convert given parametric equations to a rectangular equation and sketch the curve.

Given parametric equations can be written as,

x/2 = sin(t) and y/(-3) = cos(t) on 0 ≤ t ≤ π.

We know that the trigonometric identity,

sin²t + cos²t = 1

⇒ (x/2)² + (- y/3)² = 1

⇒ \frac{x^{2} }{4} +\frac{y^2}{9} =1

This represents an ellipse with center (0, 0), major axis 18 units and minor axis 8 units.

The rectangular equation is  \frac{x^{2} }{4} +\frac{y^2}{9} =1

The graph of the rectangular equation \frac{x^{2} }{4} +\frac{y^2}{9} =1 is as shown below.

Therefore, the rectangular equation for given parametric equations x = 2sint and y = -3cost on 0 ≤ t ≤ π is  \frac{x^{2} }{4} +\frac{y^2}{9} =1 which is an ellipse.

Learn more about the parametric equations here:

brainly.com/question/14289251

#SPJ4

7 0
2 years ago
Other questions:
  • How to solve 3x / 4 = 8
    11·2 answers
  • Given NELR, solve for x.
    8·2 answers
  • Suppose that you draw two cards from a deck. After drawing the first card, you do not put the first card back in the deck. What
    10·1 answer
  • Blank +5= -2<br><br> Please help me
    15·2 answers
  • A bag has 4 Green marbles, 3 Red marbles, and 3 Yellow marbles. what is the probability that you pick a red marble, do not repla
    14·1 answer
  • I have to solve for b but I can't figure it out
    7·2 answers
  • What is 15 out of 100 in simplest form
    9·1 answer
  • If the human heart beats an average of 62 beats in a minute, how many times will it beat in 291 minutes? A 17,942 B 18,042 229 3
    10·2 answers
  • Please help this is due in 1 hr.
    12·2 answers
  • Type the correct answer in each box, Spell all the words correctly, and use numerals instead of words for numbers. If necessary,
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!