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2 years ago

What is meant by a stratified sample?

Mathematics

2 answers:

valina [46]2 years ago

7 0

Answer:

Sampling that is used to represent different groups depending on their different qualities.

Hope that helps. x

snow_lady [41]2 years ago

5 0

Answer:

A stratified random sampling involves dividing the entire population into homogeneous groups called strata (plural for stratum). Random samples are then selected from each stratum. ... A random sample from each stratum is taken in a number proportional to the stratum's size when compared to the population.

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What's the difference between 126 1/4 78 2/3

Stels [109]

Difference means subtract, so we use subtraction:

*first we need to make the fractions have the same denominator

1/4 = 3/12
2/3 = 8/12

126(3/12) - 78(8/12)
*since the fraction in the first term is smaller than the second, make it improper

125(15/12) - 78(8/12)

now simply subtract:

125 - 78
= 47

15 - 8
= 7
* this is now (7/12)

now put them back together:

47(7/12)

That's the final answer!

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3 years ago

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RideAnS [48]

Answer:

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Step-by-step explanation:

Point C is the midpoint of AB, so AC is half the length of AB:

AB/2 = (56 ft)/2 = 28 ft = AC

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

A store is instructed by corporate headquarters to put a markup of 67% on all items. An item costing $12 is displayed by the

Elis [28]

Answer:

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Step-by-step explanation:

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3 years ago

If 2/3t-3=1, then what is t?

malfutka [58]

Answer:

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Step-by-step explanation:

I used a calculator lol

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Read 2 more answers