Graham recruited student volunteers to participate in his dissertation study. He set up several times for students to come to a specified classroom and read various types of instructional materials and to be tested. He ran all of his control conditions first and then for each session he placed all students at the session in the same treatment condition. This is problematic because those who volunteered early are likely different than those who volunteered later. This problem is primarily due to 1. response bias. 2. instrumentation bias. 3. researcher bias. 4. sampling bias.

Answers

Answer 1

Answer:

Sampling bias

Step-by-step explanation:

Bias refers a prominent problem in statistical analysis whereby one or more analytical factor are favored than the other during an analysis which should be made random. The problem. With Graham's dissertation study is the fact that he failed to randomlyvplace his subjects or observation in the study groups, favoring a particular group with non random subset. When randomization is ejected or missing from an analysis or study, it becomes less and less representative. Here, allotting early Arrivals Into the treatment group has introduced a sampling bias as those who came later, this will also leads to less reproducibility of experiment.


Related Questions

How many grams are in 1 pound (on Earth)? Round to the nearest tenth.

Answers

Answer:

453.6, or 453.59237

Step-by-step explanation:

Answer:

28.35 grams is equivilent to 1/16 lb., which is 1 oz. So, 28.35 x 16= 453.6

Step-by-step explanation:

First you must convert ounces to grams

Then, you must convert the ounces to pounds

You do this by knowing that 1 oz is 1/16 of a lb

Knowing that 28.35 grams are in 1 oz

You then multiply the 28.35 grams by the 16 oz

Which gives you 453.6 0r 453.60 grams in 1 lb

PLS HELP I ONLY HAVE UNTIL TOMORROW, I WILL GIVE BRAINLIEST TO WHO ANSWERS CORRECTLY AND EXPLAINS

Answers

i’ve seen this exact question so many times from other people

ILL GIVE BRAINLESS DUE SOON

Answers

the answer is the square root of 464. D

Answer:

Its C

Step-by-step explanation:

Which of the following is the smallest element in the set of natural numbers?
-1
O 1
There is no smallest element; the set is infinite.
0

Answers

Answer:

your answer would be 0 mark as brainliest

what is the surface area of this shape ?

Answers

Answer:

what is the surface area of this shape? 328 yd

Step-by-step explanation:

Surface area = 2 × (11×8 + 11×4 + 8×4)

Surface area = 2 × (88 + 44 + 32)

Surface area = 2 × 164

Surface area = 328 yd

Tan (14)= 6000
side of the
Х
1

Answers

Answer:

question I don't understand what you want to be done herewhat's the q

Could someone answer this for me and explain how you solved it ? (Geometry Class)

Answers

Answer:

B

Step-by-step explanation:

B is      the onlyanwser that     has a number    that  both    9 and     24 are      multiplied by toget (2/3) (please excuse the  random spaces       my  space bar   is broken)

PLEASE HELPP!!
|y.
2
X X
-2 1
45
2
3
What is the slope of line b?
01
2
2.
-2
0 -1
2

Answers

Answer:

slope = [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (0, - 2) and (x₂, y₂ ) = (4, 0) ← 2 points on the line

m = [tex]\frac{0-(-2)}{4-0}[/tex] = [tex]\frac{0+2}{4}[/tex] = [tex]\frac{2}{4}[/tex] = [tex]\frac{1}{2}[/tex]

Question 3
5 1
Divide 6 • 12

Answers

Answer:

5/6 divided by 1/12 = 10.

Hope this helped!

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

(5/6)÷(1/12) = 10

What is the Circumference of the circle below? (Use 3 for π)

Answers

Answer: The circumference of this circle with 3 for pi is 108 m.

Step-by-step explanation: The formula for the circumference of a circle is 2 pi r. So, plug in the values. 2 x 3 x 18 is equal to 108. Therefore, the circumference of this circle is 108 m.

I need help on this, anything will help!

Answers

Answer:

for the first box it would be pairs

1,5

2,8

3,11

4,14

5,17

for the second box it would be pairs

1,2

2,5

3,8

4,11

5,14

Step-by-step explanation:

Farmer Hernandez planted 804 rows of corn on her successful farm. Each row contained 26 individual plants. How many corn plants did Ms. Hernandez plant on her farm

Answers

Answer:30.92

Step-by-step explanation:divide 26 from 804 and you will get your answer

hope this helps

x^2 – 2x – 54 = 0

I need it in completing the square form

Answers

Completing the Square:

x^2 - 2x = 54

x^2 - 2x + 1 = 54 + 1

(x-1)^2 = 55

x - 1 = ±[tex]\sqrt{55\\}[/tex]

x = 1 ± [tex]\sqrt{55}[/tex]

Let f(x) = -8x + 4 and g(x) = 3x2 + 5. Find f(7) + g(7) .

Answers

Answer:

-7

Step-by-step explanation:

substitute both x's for 7:

(-8(7)+4)+ (3(7)2+5)

= -54 + 47

= -7

ASAP ! pleaseeee help marking brainliest i beg

Answers

I believe it is one infinite and none

A basket is filled with apples. There are 10 green apples, which is 25% of the total number of apples in the basket. Which equation can be used to determine x, the total number of apples in the basket

Answers

Answer:

x = 40 or x = 4(10)

Step-by-step explanation:

If x is the total number of apples in the basket then the equation would be

x = 40 or x = 4(10). (Double check to make sure I'm correct)

It’s 365765


Cauee I know

150 into the ratio 4:11

Answers

9514 1404 393

Answer:

  40 : 110

Step-by-step explanation:

There are a number of ways you can go at this. One of my favorite is to consider the value of a "ratio unit." Here, a total of 4+11 = 15 "ratio units" represent the total to be divided: 150. So the value of each one is ...

  150/15 = 10

Then the division is ...

  4 : 11 = 10·4 : 10·11 = 40 : 110

_____

Alternate solution

Let x represent the larger share. Then the ratio is ...

  (150 -x) : x = 4 : 11

Cross-multiplying gives ...

  11(150 -x) = 4x

  1650 = 15x . . . . . add 11x, simplify

  110 = x . . . . . . . . . divide by 15; the larger share

  150-x = 150-110 = 40 . . . . . . the smaller share

The division is 40 : 110.

Slope= 0 ; y-intercept=10 equation of the line

Answers

Y=10 is the answer because there is no slips

if the line crosses the y-axis at the point (0,6) and has a slope of 7. what is the equation of the line​

Answers

Answer:

the equation of the line is (7,6) because of the slope of 7

Can someone please please PLEASEEE. Help me on this one

Answers

Answer:

256 total

Step-by-step explanation:

112 boys

144 girls

On Saturday, Mark sold 2 7/8 gallons of lemonade.

On the same day, Regan sold 2/3 as much lemonade as Mark.

How much lemonade, in gallons, did Regan sell?

Answers

Answer:

Regan sold [tex]\mathbf{\frac{23}{12}}[/tex] gallons of lemonade

Step-by-step explanation:

Operations with Fractions

Mark sold [tex]2\frac{7}{8}[/tex] gallons of lemonade.

Regan sold [tex]\frac{2}{3}[/tex] as much lemonade as Mark

We can find the portion of lemonade Regan sold by multiplying both fractions. But first, we must convert to improper fraction:

[tex]2\frac{7}{8}=2+\frac{7}{8}=\frac{23}{8}[/tex]

Now we multiply:

[tex]\frac{23}{8}\cdot \frac{2}{3}=\frac{46}{24}=\frac{23}{12}[/tex]

Regan sold [tex]\mathbf{\frac{23}{12}}[/tex] gallons of lemonade

PLS HELP ONLY 1 question

Answers

The answer is C. Here you go.


A:y=-2x
B:y=-2x-3
C:-3x+2
D:y=-3x

Answers

Answer:

The answer is C.

Hope this helps :)

-ilovejiminssi♡

Heather knit a scarf for each of her 4 friends. Altogether, the scarves had a
total length of 27.6 ft. If each scarf was the same length, how long was each
scarf? Correct

Answers

Answer:

6.9 feet

Step-by-step explanation:

You can get this by dividing 27.6 by 4

then can check your answer by multiplying 4 by 6.9

Select the correct answer from each drop-down menu.

ABC has A(-3, 6), B(2, 1), and C(9, 5) as its vertices.

The length of side AB is____ units. The length of side BC is ____ units. The length of side AC is ____ units . <ABC=___​

Answers

i can answer this for you but how do u want the answer like is radical form, rounded to the nearest tenth? hundredth?

Answer:

The length of side AB is

(50)^1/2

units. The length of side BC is

(65)^1/2

units. The length of side AC is

(145)^1/2

units. ∠ABC ≈  

105.26°.

The temperature in New York was -14°F in the morning.If the temperature dropped 7°F what is the temperature now?

Answers

-21 degrees fahrenheit

If 4 points are Collinear, they are also coplanar

Answers

Answer:

that is true

Step-by-step explanation:

That is true and that is true

Select the correct answer.
Which expression is equivalent to x + y + x + y + 3(y + 5)?

A. 2x + 5y +5

B. 2x + y + 30

C.2x + 5y + 15

D.2x + 3y + 10

Answers

The answer is C.2x+3y+15

Answer:

c

Step-by-step explanation:

It takes Emmanuel 20 minutes to walk to school. It takes Liah 80% as long to walk to school. How long does it take Liaqh to walk to school? Show your work, then put your answer in the text box.​

Answers

Answer:

16 minutes

Step-by-step explanation:

80% of 20 is

80/100 * 20 = 16

Arthur walked 6 kilometers around the park, and D.W. sprinted 200 m at the park. How many meters did they travel in total?

Answers

Answer:

6200 meters

Step-by-step explanation:

Answer:

Step-by-step explanation:

The answer should be 6200

Other Questions
Find at least three examples of the use of percents in real-world settings. Use newspapers, magazines, video clips, Internet articles, or other resources. Use one of your examples to create a real-world problem for other students to solve. A. Post the pictures, articles, recordings, or links of your three examples to the discussion board as well as the problem you created from one of your examples. Be sure to give a short description of what you found. B. Read another students post and solve their example problem. C. Review for accuracy and respond to replies to your post. 50 Points!Prove that 327^3 + 173^3 is divisible by 500It's a good question, and would like to see some answers Which statement best describes how the compare-and-contrast pattern of thetext supports the author's purpose?A. The passage begins by describing the benefits of plastic and endsby comparing these benefits with the benefits of aluminum.O B. The passage begins by listing all the benefits of plastic andaluminum and ends by listing all the weaknesses of the twomaterials.C. The passage begins by describing the disadvantages of plasticand ends by explaining how aluminum has many advantages overplastic.D. The passage begins by describing the advantages of aluminumand ends by contrasting these with the disadvantages of plastic.Km Correct will get brainliest!!!!!!! Please helppppppppppppppp Describe the relationship between frequency and wavelength. 50 POIINTS PLEASE JUST WRITE A SHORT ESSAY ABOUT THISAssignment SummaryFor this assignment, you will construct a personal dietary plan that is reflective of your current diet in terms of its nutritional value. Before creating this plan, you will conduct research to explore current dietary guidelines. You will also evaluate personal barriers, and internal and external influences, to setting nutritional goals, and making food choices. You will use a food log to monitor the progress of meeting these goals. This log will help track your eating habits over the course of five days. After your entire dietary plan is constructed, you will evaluate whether healthy daily nutritional values are being met. You will then participate in a small group discussion. Give ttwo pieces of information that scientists use to prepare evolutionary trees for living and extinct organisms why were Union successful in the fight for workers rights Animals are made up of which type of cells? What opportunity were women given due to the war? What might have been the consequences had they kept the articles of confederation 9/5 -(-6/10) please helppppppppppppppp0pppppp Most plants appear green because chlorophyll:A. absorbs green lightB. absorbs voilet lightC. reflects green lightD. does not absorb voilet light Charlemange was declared the first holy roman empire because he :A. ruled as both king and the Catholic pope.B. helped save Europe from the black death.C. helped strengthen Christianity in Europe.D. convinced kings to get rid of the fedual system. Choose the sentence that is correct. aRuth hit the dog that was terrorizing her grandchildren, Ruth broke a broom over the dog's back. bMichele is afraid of flying, and she does not enjoy going on trips anywhere. cShe owned a gun: she didn't know how to use it. dnone of the above Who were the 4 leaders of the Israelites and what were they known for?Plz help me with this homework Match the image with the appropriate descriptive statement about culturalfunction. What was the main reason Europeans wanted to encourage friendship between Colonists and native Americans? True or FalseIn Britain, the new middle class began assuming morepolitical power.