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
ioda
3 years ago
10

A statistical procedure used to determine whether observed frequencies at each level of one categorical variable are similar to

or different from frequencies expected, is called the chi-square:
Mathematics
1 answer:
Maslowich3 years ago
4 0

Answer:

<h2>This statement is true.</h2>

In statistics, the chi-square test is used to prove a specific hypothesis, accepting or rejecting the null one. In order to find enough evidence to prove the hypothesis, we compare two group of frequencies, which belongs to two different groups (like a quasi-experimental design, with a control and experimental group). The researcher have set an expected frequency, based on the hypothesis, and then he/she will observe a frequency from the data recollected.

Therefore, by comparing this two frequencies (the expected with the observed), the researcher is able to demonstrate the hypothesis.

You might be interested in
A survey was done to determine the effect of students changing answers while taking a​ multiple-choice test on which there is on
Umnica [9.8K]

Answer:

6% of the changes were from incorrect to​ incorrect

Step-by-step explanation:

The sum of the percentages must be 100%.

We have these following percentages

65​% of the changes were from incorrect answers to correct

29​% were from correct to incorrect

P% were from incorrect to incorrect

So

65 + 29 + P = 100

P = 100 - 94

P = 6

6% of the changes were from incorrect to​ incorrect

7 0
3 years ago
Express 4x^2-25 as a product of two binomials.
Andrei [34K]

4x^2-25= (2x)^2-5^2=(2x-5)(2x+5)

Used: a^2-b^2=(a+b)(a-b)

5 0
3 years ago
Read 2 more answers
What is the property for 16=16
mestny [16]

Answer:

Reflexive property

Step-by-step explanation:

The property means that a real number is always equal to itself. For example, x=x. It works for all real numbers and is pretty simple. 3=3, 7.5=7.5 and etc

3 0
3 years ago
Help me plz check it
Nikolay [14]

3 1/4 = 3.25

1 mile = 5280

5280 * 3.25 = 17,160

Correct answer is D. 17,160

6 0
3 years ago
51 is 15% of what number?
jeka57 [31]
51x0.15=7.65 7.65 is the 15% of 51
6 0
3 years ago
Other questions:
  • Find the amount of discount when the original price is $90 and the discount rate is 10%
    12·1 answer
  • One pound of chicken cost $3. Jims buys 8 2/3 pounds. How much does he pay
    11·2 answers
  • Classify the triangle.<br> scalene<br> equilateral<br> isosceles
    15·2 answers
  • Help What is the point-slope form of the equation of the line with a slope of 5/3 that goes through point (0,3)?
    6·1 answer
  • You work for a consumer advocate agency and want to find the mean repair cost of a washing machine. As part of your study, you r
    10·2 answers
  • Write an equation to represent the following statement 29 is 6 more than K solve for K<br><br> K =
    15·1 answer
  • Drag each set of column entries to the correct location in the matrix equation. Not all sets of entries will be used. A biker ne
    15·2 answers
  • Please help. I am not good with this
    12·2 answers
  • Y−3=2(x+1) <br><br> Find The Value of -1
    7·1 answer
  • What is the half of 68​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!