Mathematics, 26.08.2019 15:30 natishtaylor1p8dirz

Match the definition with the terms.
1. a portion of a large group
2. choosing a sample so that every member has an equal chance of being chosen
3. choosing a sample from people who are under 15 years old
4. using the responses of a small group to make conclusions about the large group.
random sample
sample
biased sample
estimating from a sample

Answers: 2

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Answers

1.
1) "sample" / (a portion of a large group) ;

2. "random sample" / (choosing a sample so that every member has an equal chance of being chosen).

3. "biased sample" /
(choosing a sample from people who are under 15 years old).

4. "estimating from a sample"/
(using the responses of a small group to make conclusions about the large group).

Answer from: Manuel2019

Random sample - choosing a sample so that every member has an equal chance of being chosen (this is the absolute definition of random sampling)

Sample - a portion of a large group is termed as a sample.

Biased sample - choosing a sample from people who are under 15 years old (biased sampling states that all the members of a group are not included in survey)

Estimating from a sample - using the responses of a small group to make conclusions about the large group.(estimation means roughly judging something based on some sample )

Answer from: Quest

5 pm

step-by-step explanation:

Answer from: Quest

starting with:

5 + x - 12 = 2x - 7

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)

5 - 12 = x - 7 (combine and cancel x's from both sides)

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)

0 = x (add numbers together on both sides)

so in order for the equation to be true, x must be 0.

trying x = -0.5

5 + x - 12 = 2x - 7 (original equation)

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)

5 + -0.5 - 12 = -1 - 7 (did multiplication)

-7.5 = -8 (did addition on both sides)

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.

trying x = 0

5 + x - 12 = 2x - 7 (original equation)

5 + 0 - 12 = 2(0) - 7 (plug in value of x)

5 + 0 - 12 = 0 - 7 (did multiplication)

-7 = -7 (did addition on both sides)

since -7 equals -7, that demonstrates that the value of 0 for x is correct.

trying x = 1

5 + x - 12 = 2x - 7 (original equation)

5 + 1 - 12 = 2(1) - 7 (plug in value of x)

5 + 1 - 12 = 2 - 7 (did multiplication)

-6 = -5 (did addition on both sides)

since -6 is obviously not equal to -5, the value of 1 for x is wrong.

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Match the definition with the terms.
1. a portion of a large group
2. choosing a sample...

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