Design and Analysis of Experiments-Analysis and Layout of Completely Randomized Design (ISS Statistics Paper IV): Questions 1 - 6 of 7

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Question number: 1

» Design and Analysis of Experiments » Analysis and Layout of Completely Randomized Design

Appeared in Year: 2012

Essay Question▾

Describe in Detail

Discus symmetrical BIBD. For an SBIBD, under usual notations, show that

N = r(rλ)υ12

Explanation

Symmetrical BIBD:

A BIBD is said to be symmetric if b = υ and r = k.

υ, r, b, k and λ are called the parameters of the BIBD

υ= number of varities or treatments

b = number of blocks

r = number of replicates for each treatment… (384 more words) …

Question number: 2

» Design and Analysis of Experiments » Analysis and Layout of Completely Randomized Design

Appeared in Year: 2011

Short Answer Question▾

Write in Short

Explain Randomized block design.

Question number: 3

» Design and Analysis of Experiments » Analysis and Layout of Completely Randomized Design

Appeared in Year: 2013

Essay Question▾

Describe in Detail

Identify the design given below, whose blocks are:

(1, 2, 3, 4); (2, 3, 4, 1) and (4, 1, 2, 3).

Write its parameters. Suppose a treatment ‘3’ belonging to 3rd row and 4th column is missing. How can you estimate that missing treatment? Estimate that value. Write degrees of freedom for error and total variation.

Explanation

This is the Randomized block design. (RBD)

Its parameters are t = treatments 4 and Blocks r = blocks = 3

Here i = 1, 2, 3, 4 and j = 1, 2, 3

The method of estimating the missing value:

let us consider the missing value as x belonging… (527 more words) …

Question number: 4

» Design and Analysis of Experiments » Analysis and Layout of Completely Randomized Design

Appeared in Year: 2009

Essay Question▾

Describe in Detail

Explain the uniformity trials. Discuss their role in picking up a proper design.

Explanation

Uniformity trials helps to give idea about the fertility variation of the field.

A trial in which the field (experimental material) is divided into small units (plots) and the same treatment is applied on each of the units and their fields are recorded. From these yields, ‘fertility counter map’ is… (265 more words) …

Question number: 5

» Design and Analysis of Experiments » Analysis and Layout of Completely Randomized Design

Appeared in Year: 2011

Essay Question▾

Describe in Detail

Discuss missing plot techniques in a RBD. Suppose one observation, say, ti is missing in one block of a RBD, derive a method to estimate that missing value.

Explanation

Missing plot techniques in a RBD:

Sometimes observations from one or more experimental units will be missing due to some unavoidable causes. There might be many unforeseen causes, for example, in agricultural experiments damages by pets or in animal experiment any animal may die or the observations from one or… (544 more words) …

Question number: 6

» Design and Analysis of Experiments » Analysis and Layout of Completely Randomized Design

Appeared in Year: 2012

Essay Question▾

Describe in Detail

Let four treatments be arranged in three blocks. The arrangement is given below:

Block 1: [t1t2t3t4]

Block 2: [t2t3t4t1]

Block 3: [t3t4t1t2]

Identify the block design. Write its parameters. If the treatment t4 in Block 3 is missing, estimate the missing value. Write its ANOVA table.

Explanation

This is the Randomized block design. (RBD)

its parameters are t = treatments 4 and Blocks r = blocks = 3

Here i = 1, 2, 3, 4 and j = 1, 2, 3

Let the missing value be t4=x in Block 3.

The method of estimating… (525 more words) …

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