Statıstıcs II (ENG)
Ünite Sınavı Soruları
- 20 soru
- Soru metinleri açık; şıklar ve cevap anahtarı uygulamada
- 1
In stratified sampling method, the target population is divided into homogenous subgroups which are called _________________ ?
- 2
Which of the following is not one of the reasons for sampling from a population?
- 3
In a social experiment about drug abuse in young population, researchers have difficulities to list the population, even to reach them. Which sampling method should they use for the research?
- 4
If someone wants to carry out a research to find out the smoking rate in females over the age of 50 living in Eskişehir, what is the target population for this research?
- 5
The population consist of five cities denoted by A, B, C, D, and E. If a sample of two cities is to be selected from this population how many different samples can be created?
- 6
Which one of the following option is a non-probability sampling method?
- 7
Population of country A is 500.000, population of males is 240.000 (25 % are students), population of females is 260.000 (30 % are students). How many people are there in the target population for a survey to determine sports habits of students?
- 8
I. Random numbers can be used to select simple random samples from a population frame.
II. Each possible sample combination of the specified size does not have equal probability of being chosen.
III. It is the most basic sampling method.
Which of the given is TRUE about simple random sampling?
- 9
A researcher wants to conduct a survey to determine the infertility rate in females over 30 years of age living in Turkey. Which of the following is the true target population for this research?
- 10
The researcher intends to separate the patients according to their grade of the cancer (grade I, II, III, and IV), age (20-30, 40-59, 60-89 years) and the monthly income (less than 2500TL, 2500TL-5000TL, 5000TL and more.) How many stratum are there?
- 11
if you want to take a random sample from the population, what should be done for an accurate sample?
- 12
In a university, a surveyor calculated the proportion of girls as 30 % and 34 % at ages 20 and 21, and proportion of boys are 26 % and 10 % of the boys at ages 20 and 21, respectively. What is the sampling method she used ?
- 13
Which of the following are among the reasons for sampling?
- Cost
- Time
- Accuracy
- Destructive tests
- Esthetics
- 14
A qualitative survey was conducted to find out how contended 3rd year medical students are with distance learning instead of conventional methods in Europe. 250 students were included in the study from different European countries. Concerning statistical terminology, which of the following matching is true?
- 15
Which of the following is true about the population?
- 16
The members, who are identified previously, are asked to identify other members of the population. Newly identified members name others.
Which method of sampling is described above?
- 17
Which one of the following method's most important feature is efficiency?
- 18
In a research, 5 of 20 schools of university A were selected at random. 2 classes of each of the 5 schools were chosen at random. Then, 3 courses were selected from each class at random. Which type of sampling methods was used in this research?
- 19
What is also called availability sampling method?
- 20
Which sampling method should be chosen when each possible sample combination of the specified size required to has equal probability of being chosen?