Q. No. 85 – 89 are based on the following paragraph. Read the following paragraph and answer the five questions that follow : A researcher collected the data on logical reasoning and spatial reasoning from 200 students (equal number of boys and girls) of engineering college covering the specializations of civil and computer engineering by using a stratified sampling method. Information about students marks in the semester-end examination and information about the parents’ annual income was also collected (both the variables were measured on a continuum).
If researcher has followed equal-size stratified sampling procedure, then how many females from the computer specialization are included in the study ?
100
Stratified sampling first divides the population into homogeneous strata and then samples from each stratum; in equal-size (non-proportional) stratified sampling every stratum contributes the same number of cases regardless of its size in the population.
The passage fixes the gender split explicitly: 200 students with equal numbers of boys and girls. Treating gender as the stratifying variable with equal-size allocation gives \(\frac{200}{2} = 100\) females in the sample.
This female stratum of 100 is the group of girls drawn into the study, the stratum from which the female computer-specialization students come; the figure 100 is the equal-size allocation obtained for the female stratum.
Hence, the answer is 100.
Similar Questions
In a study, participants are recruited from local schools in urban area. The study is conducted on saturday so only the saturday working school take part. What type of sample is this ?
Multistage cluster sampling is helpful when :
When a research problem is related to heterogeneous population, the most suitable method is :
A researcher selects a probability sample of 100 out of the total population, it is called :
When the population is divided into subsets such that the units within the subset are as heterogeneous as possible and are as homogeneous as possible among themselves, the sampling method is called as :
The standard error of sample mean based on 100 observations from normal distribution with mean 50 and standard deviation 5 is ............ .
Sampling error can be reduced by :
A magazine printed a survey in its monthly issue and asked readers to fill it out and send it in. Over 1000 readers did so. What is this type of sample called ?
What type of Sampling technique is it when researcher ‘selects samples as and when s/he gets them’ in the process of data collection ?
Which is the sampling technique that allows every unit in the population an equal chance of being selected ?
Important Questions from Sample - Teaching
- Which of these statements does NOT describe snowball sampling correctly?
A. It is a non-probability sampling technique.
B. It is used when the target population is readily available.
C. Initial participants refer others to take part in the study.
D. It ensures equal chance of selection for all individuals.
E. It is commonly used in sociological and qualitative research.
Choose the correct answer from the options given below: - Assertion (A): The larger the sample size, the greater will be the power of the test.
Reason (R) : A large sample size results in smaller standard error of mean.
Codes : - Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Read the statements and choose the correct answer using the code given below.
Assertion (A) : Findings of a research based on a large sample size of a population being studied can always be generalized to the whole population.
Reason (R) : Sample size does not ensure representativeness. - In a Random Sampling distribution of means :
I. The standard error will decrease as the sample size increases.
II. The standard error will increase as the sample size increases.
III. The mean equals the population mean.
IV. The mean is not equal to the population mean. In a study, participants are recruited from local schools in urban area. The study is conducted on saturday so only the saturday working school take part. What type of sample is this ?
