The mean absolute deviation of 25, 30, 27, 40 and 35 is:
4.88
The mean absolute deviation (MAD) is calculated by taking the absolute differences from the mean, and then averaging those differences.
Mean of the numbers = (25 + 30 + 27 + 40 + 35) / 5 = 31.4
Absolute deviations: |25 - 31.4| = 6.4, |30 - 31.4| = 1.4, |27 - 31.4| = 4.4, |40 - 31.4| = 8.6, |35 - 31.4| = 3.6
MAD = (6.4 + 1.4 + 4.4 + 8.6 + 3.6) / 5 = 4.88
Important Questions from Sample
Arrange in sequence the steps involved in the sampling process
A. Choose between probability and nonprobability sampling
B. Specify sampling unit
C. Validate sample
D. Determine the necessary sample size
E.Select appropriate sampling frame
Choose the correct answer from the options given below:
Which one of the following is NOT an essential characteristic of data?
Which of the following are correct about Questionnaire?
(a) In open ended question, specific responses are taken through ranking, scaled items and categorical responses.
(b) In ranking, respondent place the response in a rank order according to some criteria.
(c) In scaled item, respondent indicate the strength of their agreement only.
(d) In categorical response, respondent are given only two responses such as 'yes' or 'no'.
Choose the correct option from the codes :
Given below are two statements:
Statement I: If a population from which a sample is to be drawn does not constitute a homogenous group, stratified sampling technique is generally applied in order to obtain a representative sample.
Statement II: In the case of small samples, z-test is applied even if the population standard deviation is not available (given).
In the light of the above statements, choose the most appropriate answer from the options given below:
- Which of the example requires snowball sampling technique?
