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Oxana [17]
3 years ago
9

When conducting a survey, which of the following is a reason to use a random sample?1. To make cause-and-effect connections2. To

avoid bias3. No answer text provided.4. To systematically favors the correct choice over every other choice on each question
Mathematics
1 answer:
Andrews [41]3 years ago
3 0

Answer: 2. To avoid bias

Explanation:

The random sampling can be defined as the method of selecting the samples from the population of interest randomly. The main advantage of this method is to select the samples from the target population and eliminating the bias in sampling. The random sampling is least choice of sampling for research purpose as the researcher wants to choose only selected desired samples for the study.

You might be interested in
Examples of data presentation in math
myrzilka [38]

Answer:

Data Presentation - Tables

Tables are a useful way to organize information using rows and columns. Tables are a versatile organization tool and can be used to communicate information on their own, or they can be used to accompany another data representation type (like a graph). Tables support a variety of parameters and can be used to keep track of frequencies, variable associations, and more.

For example, given below are the weights of 20 students in grade 10:

50, 45, 48, 39, 40, 48, 54, 50, 48, 48, \\ 50, 39, 41, 46, 44, 43, 54, 57, 60, 45.

50,45,48,39,40,48,54,50,48,48,

50,39,41,46,44,43,54,57,60,45.

To find the frequency of 4848 in this data, count the number of times that 4848 appears in the list. There are 44 students that have this weight.

The list above has information about the weight of 2020 students, and since the data has been arranged haphazardly, it is difficult to classify the students properly.

To make the information more clear, tabulate the given data.

\begin{array}{c}\\ \text{Weights in kg} & & & \text{Frequency} \\ 39 & & & 2 \\ 40 & & & 1 \\ 41 & & & 1 \\ 43 & & & 1 \\ 44 & & & 1 \\ 45 & & & 2 \\ 46 & & & 1 \\ 48 & & & 4 \\ 50 & & & 3 \\ 54 & & & 2 \\ 57 & & & 1 \\ 60 & & & 1 \end{array}

Weights in kg

39

40

41

43

44

45

46

48

50

54

57

60

Frequency

2

1

1

1

1

2

1

4

3

2

1

1

This table makes the data more easy to understand.

5 0
3 years ago
Find the range for the measure of the third side of a triangle given the measures of two sides 25 yd an 38 yd
lys-0071 [83]

Answer:

The range of the measure of third side is 13\ yd.

Step-by-step explanation:

Given:

measure of the first side = 25 yd

measure of the second side = 38 yd

We need to find the range  for the measure of the third side.

Solution:

Let the measure of the third side be 'x'.

Now by Triangle Inequality property which states.

Measure of the third side must be less than the sum of the measures of other two side and greater than difference of the measures of other two side.

Sum of two sides = measure of the first side + measure of the second side = 25 + 38 = 63

Difference of two sides  =  measure of the second side - measure of the first side = 38-25 =13

framing the above quote in equation form we get;

13\ yd

Hence the range of the measure of third side is 13\ yd.

5 0
3 years ago
How do you can you solve this problem 37 + y = 87; y =
Airida [17]
37+y=87
y=87-37
y=50
............................
3 0
3 years ago
Read 2 more answers
4.
Murrr4er [49]

Answer:

C. 2

Step-by-step explanation:

Use the formula  

x  =  − b /2 a

to find the maximum and minimum.

( − 3 , 2 )

4 0
3 years ago
The Hamden board of education wants to know how the community feels about building a new media center for the middle school. The
Aleks [24]
According to the statement above, The Hamden board of education called every <span>tenth person on the registration list. So let's analyze each case:

</span><span>The sample is not randomly chosen (FALSE)

Given that the statement doesn't tell us anything about the way they choose the sample, it is reasonable to conclude that this is a </span>randomly chosen. They called every tenth person on the registration list until the number of people was 40.

The sample should be larger to give more reliable information (TRUE)

You did not have to use mathematics to determine that you would need more information to get a conclusion. You must increase the sample, that is, the sample must be larger to give a reliable information.

The sample size is too large to make inferences (False)

This is explained in the previous item. If the sample should be lager is because the size is not too large.

The sample size is too small to represent the population (TRUE

This is true because 40 voters represent barely 0.5% of the entire list. This list has 7300 voters, so getting the conclusion from this sample doesn't provide with a strong conclusion.

<span>The sample size is too small and will show larger variation. (FALSE)

Although the sample size is too small, the sample size not necessarily will show variation. In fact, it is possible that it does not show any variation and most of the people feel well about building a new media center for the middle school but it doesn't mean that the whole community does.

The sample is invalid because it randomly chooses voters. (FALSE)

It is false because in probability studies the sample is chosen randomly, so you get conclusions about the whole population always taking samples that represent the population as a whole.

The sample size is too small and can lead to false inferences (TRUE)

You can get false conclusions given that the sample size is too small. <span>It's important to note that the sample size supports the conclusion of the study, so the sample must increase to have a reliable study.
</span>
</span>
7 1
3 years ago
Read 3 more answers
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