Statıstıcs I (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
Which of the following is used to represent discrete values for each category for a given variable on horizontal axis while vertical axis show the actual numbers of each category?
- 2
- The observations made on the variables constitute the data.
- The subjects or individuals or companies on which these observations are made are called cases.
- Categorical variables and data can be either nominal or ordinal.
- Continuous variables and data can be either interval-scale or ratio-scale
Which of the above are correct?
- 3
Which scales of measurement have a natural or zero-valued base value that cannot be changed?
- 4
.................... is the combination of statistics, mathematics, programming, problem-solving, capturing data in ingenious ways, the ability to look at things differently, and the activity of cleansing, preparing, and aligning the data.
What is the correct concept for the sentence above?
- 5
What type of data presentation method is described in the sentences below?
- It is useful to determine a vague point for location of center and spread of data.
- It is not useful for large sizes of data.
-
To use this type of plot, one needs to identify the lowest and the highest value of the data set first.
- 6
Which one below is a term that has the same meaning the with the term Statistics?
- 7
Which of the following is not true about stem and leaf display?
- 8
The graphic above shows the frequency distribution of five continents being visited by 15 people.
What kind of a graphic is used to show the frequency distribution in the figure above?
- 9
The above table contains the daily sales data of a market. We want to construct relative frequency distribution table for the data. What is the first class’ relative frequency?
- 10
What is the mode of the following data set?
14, 17, 22, 2, 25, 4, 14, 6, 35, 93, 11, 14, 25, 18, 18, 25, 20, 14, 14, 48, 18, 25, 48
- 11
Suppose that researchers collected a random sample of 2500 people from the general Turkish adult population to gauge their entertainment preferences. Then, upon analysis, found it to be composed of 75% males.
What type of error was made if this sample would not be representative of the general adult population and would influence the data?
- 12
What is the underlying reason of using closed-ended questions rather than open-ended question in many surveys?
- 13
Which of the following is not true about histogram?
- 14
- Age
- Hours of Sleep
- The Inflation Rate
- Gold Price
- Time to Run 100 meters
Which of the above are interval-scale variables?
- 15
Which statements below are correct about the table above?
I Mark's weekly wage being 320 is a data set.
II Being 56 years old male, Mark's earning 320 dollars per week is a case.
III Mark's being male is a qualitative data.
IV Mark's being 56 years old is a qualitative data.
- 16
Which one below gives us the difference between Dot plot and Stem-and-Leaf Display?
- 17
In a research investigating the effects of playing online games on aggressive behavior, 40 teenagers at the age of 10 plays 4 hours of violence games and 40 teenagers at the age of 10 does not play any video games. What type of research is this research?
- 18
What is the midrange of the following data set with frequency in paranthesis?
15 (2), 25 (4), 38 (3), 44 (3), 64 (3), 105 (2)
- 19
Researchers wanted to evaluate the effectiveness of eKampüs Anadolum system at the end of the semester with a questionnaire. In this questionnaire, students were asked to indicate how often they used the system by marking on the following scale:
(1) none
(2) 1-2 times in the semester
(3) 1-2 times per month
(4) 1-2 times per week
(5) Every dayAccording to the description given above, what type of question is this?
- 20
What type of variable is a girl’s answer to a marriage offer?