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siniylev [52]
3 years ago
11

Which of the following characteristics of experiments are not also characteristics of surveys?

Mathematics
2 answers:
kari74 [83]3 years ago
6 0

Answer: The correct answer is option E and option C

Step-by-step explanation: From the question, all the option are characteristics of an experimental study, while some are as well characteristics of a survey study. We now have to identify the options that are not characteristics of a survey study.

Survey study is an observational study that is carried out to discover the characteristics of a sample group under a specific criteria and to compare the characteristics of this sample groups.

Replication with other groups of subjects cannot improve the reliability of a survey study, because two different survey study using a different samples or a different location will not have the same characteristics, and the result gotten from each sample can only be used to define that sample or the location of that sample.

It is not a prerequisite that one or more treatment groups and a control group should be included in a survey study. Because a survey group can also observe samples in their natural cause, without applying any force or treatment to alter them.

Data are gathered during a survey because we record our results and observations. A survey research is all about gathering data from either a treatment group or non treatment group, to compare with another data, and knowing the relationship between the characteristics of the sample. The result of the samples of a survey study are compared and analysed using statistics which includes mean, mode, range, bar chart, graph, histograms, and many more.

Andrews [41]3 years ago
5 0

Answer:

a,b,c,e

Step-by-step explanation:

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A square corner of 16 square centimeters is removed
oee [108]

Option C:

Area of the remaining paper = (3x – 4)(3x + 4) square centimeter

Solution:

Area of the square paper = 9x^2 sq. cm

Area of the square corner removed = 16 sq. cm

Let us find the area of the remaining paper.

Area of the remaining paper = Area of the square paper – Area of the corner

Area of the remaining = 9x^2-16

                                     = (3x)^2-(4)^2

Using algebraic formula: a^2-b^2=(a+b)(a-b)

                                     =(3x-4)(3x+4)

Area of the remaining paper = (3x – 4)(3x + 4) square centimeter

Hence (3x – 4)(3x + 4)  represents area of the remaining paper in square centimeters.

8 0
3 years ago
Read 2 more answers
6th grade math please help
Digiron [165]

Answer:

3/14

Step-by-step explanation:

6/7 ÷ 4

Copy dot flip

6/7 * 1/4

Rewriting

6/4 * 1/7

Divide the top and the bottom of the first fraction by 2

3/2 * 1/7

3/14

8 0
3 years ago
Read 2 more answers
The answer is 5:6:20 but can someone explain how plz?
Leya [2.2K]
The ratio of red to green is 5:6 which means that for every 5 red cars, there are 6 green cars

The ratio of green to blue is 3:10 telling us that for every 3 green cars, there are 10 blue cars. 

The ratio 3:10 is equivalent to 6:20 after we multiply both parts by 2. This now says that for every 6 green cars, there are 20 blue cars.

------------------------------

Let's say we had 5 red cars, 6 green cars and 20 blue cars
Based on that info, we know that the ratio of red to green is 5:6
And the ratio of green to blue is 6:20 which reduces to 3:10

We don't reduce 6:20 to 3:10 however, since that would change the green count from 6 to 3. We want to keep the green count at 6.

So because there are 5 red cars, 6 green cars, and 20 blue cars in this example, and this example points to the proper ratios mentioned earlier, this means that the final answer is 5:6:20. This ratio cannot be reduced or simplified as there are no common factors (other than 1) for 5, 6, and 20.
4 0
3 years ago
Rudy correctly solved the equation 10 = 4r.
VLD [36.1K]

Answer:

its B

Step-by-step explanation:

6 0
3 years ago
What are the coordinates of the endpoints of the midsegment for △DEF that is parallel to DE¯¯¯¯¯?
Readme [11.4K]

Answer:

The endpoints of the midsegment for △DEF that is parallel to DE, are (-1,3.5) and (-1,2).

Step-by-step explanation:

If a line connecting the midpoint of two sides and parallel to the third side of the triangle, then it is called a midsegment.

From the given figure it is noticed that the vertices of the triangle are D(1,4), E(1,1) and F(-3,3).

If the midsegment is parallel to DE, then the end points of the midsegment are mid point of DF and EF.

Midpoint formula.

Midpoint=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

Midpoint of DF,

Midpoint=(\frac{1-3}{2},\frac{4+3}{2})

Midpoint=(-1,3.5)

Midpoint of EF,

Midpoint=(\frac{1-3}{2},\frac{1+3}{2})

Midpoint=(-1,2)

Therefore the endpoints of the midsegment for △DEF that is parallel to DE, are (-1,3.5) and (-1,2).

3 0
3 years ago
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