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earnstyle [38]
3 years ago
14

Which of the following is true?​ a. ​Stratification is utilized to create a z-score across data sets. b. ​Summarization provides

detail for each grouping into tables. c. ​Stratification is an extension of summarization. d. ​Stratification is the splitting of data into case-specific tables.
Mathematics
1 answer:
Mrac [35]3 years ago
4 0

Option D

Stratification is the splitting of data into case-specific tables is true.

<u>Explanation:</u>

Stratification is a method or configuration of layers, groups, or sections. Stratification intends to classify data/characters/objects into distinct groups or layers. Stratification consists of splitting the group into subsets (named strata) within individual of which an autonomous sample is chosen.

Stratified sampling in statistics is applied to highlight contrasts within groups in a population, as objected to simple random sampling. Stratification is the part of something, primarily society, into various groups or layers.

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Find the sum of the sequence. 42+43+44+45+...+107
8090 [49]

Answer:

4917

Step-by-step explanation:

<u>Given sequence: </u>

  • 42, 43, 44, 45, ..., 107

This is AP with common difference of 1, the first term of 42 and the last term of 107

<u>Number of terms:</u>

  • 107 - 42 + 1 = 66

<u>Sum of the terms:</u>

  • Sₙ= 1/2*n*(a₁+aₙ)
  • Sₙ= 1/2*66*(42+107) =  4917

<u>Answer is:</u> 4917

8 0
2 years ago
En said the value of the expression 72-8^2 +6*3 is 50. What mistake did Ben make? Correct Ben’s mistake and give the value of th
posledela

Given:

72-\frac{8}{2}+6\times3

He does mistake in the order of giving preference.

We should give preference in the order, division, multiplication, addition, subtraction.

But, he gave the first preferrence to the subtraction.

72-8=64

Next, he used division

64/2=32

Next he adds 32 with 8.

So, he gets 50.

But the actual simplification is,

Simplifying we get,

\begin{gathered} 72-\frac{8}{2}+6\times3=72-4+18 \\ =68+18 \\ =86 \end{gathered}

Hence, the correct value of the expression is 86.

7 0
1 year ago
PLEASE HELP BEST ANSWER WILL GET BRAINLIEST
Alina [70]

Answer: Expression I & Expression II

Step-by-step explanation:

2n+n+3n+5 simplifies to 6n+5

8 0
3 years ago
What is the area of the pentagon
vlada-n [284]
The area of the pentagon is 140
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3 years ago
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Give coordinates of the point where x = 3. Explain what the point represents in this situation:
Ronch [10]

Answer:

if x=3 then y is o

(3,0) is the coordinate points if y is 0

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2 years ago
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