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Question

Completely randomized design is based on the principles of ______ and randomization only.

This question was previously asked in
SSC CGL 2018 (Tier 2) Statistics Previous Year Paper (22-feb-2018)
The correct answer is

Replication.

The three basic principles of experimental design are randomization, replication, and local control.

A Completely Randomized Design (CRD) assumes homogeneous experimental units, so it does not use local control (blocking). It relies on only two principles: randomization (treatments assigned to units at random) and replication (each treatment applied to more than one unit, which gives the estimate of experimental error).

Hence the blank is Replication.

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Similar Questions

  1. Which of the following is NOT a way of the sampling?

  2. Which of the following is a source of primary data?

  3. Suppose in a certain large group, the height is approximately normally distributed with a mean of 160 cm and the standard deviation is 10. For a sample of size 16, the sampling distribution of sample mean has standard error equal to:

  4. Which of the following is NOT an example of the probability sampling technique?

  5. In the construction of cost of living index, commodities are selected by:

  6. Consider simple random sampling with replacement from a population of size N. The number of samples of size n is

  7. If a population consists of 10 units and SRSWOR is adopted, the probability of selecting a specified sample of 2 units is:

  8. In drawing a sample of size n under SRSWR from a population of size N, the probability that a specified member is included in the chosen sample is

  9. A sample of 60 students is to be selected from a population of 480 students belonging to 3 different schools.

    SchoolN i(Total No. of Students)N i(sample size)
    A120n 1
    B200n 2
    C160n 3

    Drawing a sample using proportional allocation technique would give n 1, n 2, n 3as
  10. In SRSWOR of size n from a population with N units if p is the proportion of sampled units having a given attribute, then unbiased estimate of V(p) is


Important Questions from Sampling Theorems

  1. Which of the following is NOT a way of the sampling?

  2. Which of the following is a source of primary data?

  3. Suppose in a certain large group, the height is approximately normally distributed with a mean of 160 cm and the standard deviation is 10. For a sample of size 16, the sampling distribution of sample mean has standard error equal to:

  4. Which of the following is NOT an example of the probability sampling technique?

  5. Let $X_1, X_2, \ldots, X_n$ be $n$ independent random variables. Each of the random variables follows $Normal(\mu = 0, \sigma^2 = 1)$ distribution. Define $\bar{X} = \frac{1}{n} \sum_{i=1}^{n} X_i$.

    Which of the following statements is/are correct?
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