A researcher is interested in the cumulative grade point average (CGPA) of students who enrolled in a Statistics course this semester. There are three groups, namely A, B and C which consist of 30 students for group A, 40 students for Group B and 30 students for group C. A sample of 50 students are randomly selected in this study. i) State the population and sampling frame. ii) State the variable of interest. iii) Give the appropriate sampling technique to be used for this study. iv) Calculate the number of students that should be selected from each group. v) Suggest the data collection method for this study. Give ONE advantage and ONE disadvantage.

Will Underwood 2022-09-22 Answered
A researcher is interested in the cumulative grade point average (CGPA) of students who enrolled in a Statistics course this semester. There are three groups, namely A, B and C which consist of 30 students for group A, 40 students for Group B and 30 students for group C. A sample of 50 students are randomly selected in this study.
i) State the population and sampling frame.
ii) State the variable of interest.
iii) Give the appropriate sampling technique to be used for this study.
iv) Calculate the number of students that should be selected from each group.
v) Suggest the data collection method for this study. Give ONE advantage and ONE disadvantage.
You can still ask an expert for help

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Solve your problem for the price of one coffee

  • Available 24/7
  • Math expert for every subject
  • Pay only if we can solve it
Ask Question

Answers (1)

Mckayla Carlson
Answered 2022-09-23 Author has 7 answers
(i) The population is the students who enrolled in Statistic course in this semester and the sampling frame is all the students in this semester who enrolled in Statistics course.
(ii) The variable of interest is Cumumative grade point average (CGPA).(iii)The appropriate sampling technique to be used for this study is stratified random sampling.(iv) The number of students that should be selected from group A is,
n ( A ) = n N × N A = 50 100 × 30 = 15
The number of students that should be selected from group B is,
n ( B ) = n N × N B = 50 100 × 40 = 20
The number of students that should be selected from group C is,
n ( B ) = n N × N C = 50 100 × 30 = 15
(v) The data collection method for this study can be observing data from the overall school reports (observation). Advantage of this method is that there will be no respondent error and the disadvantage is that there might be typo error in the school record
Did you like this example?
Subscribe for all access

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

You might be interested in

asked 2022-10-08
Which of the following is a probabilistic sampling approach that does not require the use of a sampling frame?
A) Stratified
B) Frame-free
C) Convenience
D) Skipped step
E) Judgment
F) Intercept
G) Cluster
H) Exploratory
asked 2022-10-25
Which of the following statements are false?
A. In enumerative studies, interest is focused on a finite, identifiable, unchanging collection of individuals or objects that make up a population.
B. "All companies listed on the New York Stock Exchange" is an example of a sample. C. A sampling frame is a listing of the individuals or objects to be sampled.
D. "All possible yields (in grams) from a certain chemical reaction carried out in a laboratory" is an example of conceptual or hypothetical population.
asked 2022-07-16
determine what type of sampling technique is used (Simple Random Sampling, Stratified Random Sampling, Systematic Sampling, Cluster Sampling, or Convenience Sampling).
A company is taking a survey of its employees and separates them into the following groups: Male/Part-Time, Male/Full-Time, Female/Part-Time, Female/Full- Time.
asked 2022-08-18
The Department of Health is conducting random drug testing in a barangay in relation to their age. You are the officer assigned to conduct the test in your own barangay. You only need 10 randomly selected students to be tested. You are to give instructions to the school director on how you are going to select the 10 students by applying your knowledge of the methods of sampling. To do the task well, you need to ensure that the sample is selected randomly. From a sample of 10, you take a sample size of 2.
TASKS:
A. Identify the appropriate method of sampling in the given situation and explain how you are going to do it.
B. Create a probability distribution that includes the list of your possible samples.
C. Compute for the mean, variance, and standard deviation of the sampling distribution of the means.
D. Construct a probability histogram of your sampling distribution.
asked 2022-07-22
A 129-kg astronaut (including space suit) acquires a speed of 2.90 m/s by pushing off with her legs from a 1900-kg space capsule. Use the reference frame in which the capsule is at rest before the push.
What is the velocity of the space capsule after the push in the reference frame? Express your answer to two significant figures and include the appropriate units. Enter positive value if the direction of the velocity is in the direction of the velocity of the astronaut and negative value if the direction of the velocity is in the direction opposite to the velocity of the astronaut.
asked 2022-08-11
Homer Simpson is interested in studying the ratio of the various colors of sprinkles on Lard Lad donuts. To conduct his study, Homer purchases three of each variety of donut they make and counts the sprinkles on them. What method did Homer use to select his sample?
1. Stratified
2. Simple Random Sample
3. Systematic
asked 2022-09-26
What is the statistics processes stages and how do we select a simple random ?

New questions