Statıstıcs I Çıkmış Sorular, Online Deneme Sınavları, Çalışma, Dersler, Sınava Hazırlanma, vize, final

Soru 1:

Which one below is one of the limitations of interview method?

A) The individuals included in the study might alter their behavior. B) Direct contact with the responders avoids misunderstanding of the questions. C) People will tend to give answers to the question when they are approached personally. D) The data collection by interview usually includes irrelevant information from those people who are conducted. E) The researcher may select an irrelevant individual about the study, this leads to bias into the results.

Soru 2:

A study was conducted to determine the effects of two different training programs on athletes. Sixty athletes were randomly assigned into two training programs each including 30 athletes. One group is given only coffee and water to drink before trainings while the other group is given only water to drink before trainings. After training programmes, an assesment test was applied to the athletes. One month later, the group who had drunk coffee and water before the trainings progressed more than the group who only had drunk water before the trainings. What do you think is the most acceptable conclusion of this experiment?

A) The sample size is too small to conclude anything at all; if this was done on bigger samples of people, the evidence one way or the other would be more solid. B) This result is definitely a result of random variation and no attention should be paid to it. C) We cannot conclude anything either way, since this is done just for two groups of athletes. D) This result constitutes tentative evidence of the benefits of coffee to athletes. E) Drinking coffee and water on pre-trainings appears to be beneficial to athletes. An experiment with more athletes should be undertaken.

Soru 3:

what is the median of the following data? (2, 4, 4, 4, 5, 6, 7, 7, 8, 10)

A) 2.5 B) 4.5 C) 5.5 D) 8.5 E) 10.5

Soru 4:

What cannot be an example showing that statistics is part of our daily lives?

A) changing climate records B) making weather forecast C) understanding climate patterns D) displaying weather forecasting E) keeping wind direction records

Soru 5:

Which of the following are not data?

A) Age B) Blood sugar C) Cholesterol levels D) Gender E) Hospital patient

Soru 6:

Data set is large Measurements type is ratio scale Interpretation should be easier In which condition(s) above, it is more appropriate to use grouped frequency for summarizing data?

A) Only I B) Only II C) Only III D) I and II E) I and III

Soru 7:

Which of the following is the measurement of a magnitude without equal intervals?

A) Nominal scale B) interval scale C) ordinal scale D) ratio scale E) qualitative scale

Soru 8:

The main criteria for selecting a sample will be that the sample is _____I_____ of the population and that there’s no or very little ____II_____ in the choice of the sampling units. Which of the following options fills the blank in the above sentence in the most correct way?

A) I - representative II - subjectivity B) I - representative II - objectivity C) I - inclusive II - subjectivity D) I - inclusive II – objectivity E) I - containing II - objectivity

Soru 9:

Which measure of central tendency is the best for nominal data sets?

A) Mode B) Median C) Arithmetic mean D) Geometric mean E) Trimmed mean

Soru 10:

Which of the following do not constitute “big data”?

A) All the comments written on Facebook page B) All comments posted on Youtube video C) All men basketball player statistics in one season D) All football teams statistics in Turkish Super League E) All data that are very large numbers, every value in the billions and trillions

Soru 11:

Say you are investigating the smart phone preferences of people living in Turkey and you surveyed 2000 people in Denizli. What can you say your results?

A) Can give statistical estimates of preferences of Turkish people B) Cannot say anything about people live in Turkey C) Should gather more data from Denizli D) Can present exact proportions of preferences in Turkey E) Can present exact proportions of preferences in Denizli

Soru 12:

Which of the statements below CANNOT be true about Statistics?

A) Statistics can make a lot of numerical data easily understandable. B) We often talk of estimates in Statistics. C) Most of the observations can be reduced to some numerical quantity through statistical methods. D) We cannot get access to every single data on the topic that we are interested in. E) Statistics usually samples from a very small data, not from a large population.

Soru 13:

What type of variable is your mood which gets values good or normal or bad?

A) continuous regular B) qualitative nominal C) qualitative ordinal D) quantitative interval E) quantitative ratio

Soru 14:

The exam scores of 5 students taking the statistics course are given above. The weight of midterm exam is 40% and the weight of final is 60%. What will be the weighted average score of this group?

A) 60 B) 62 C) 66 D) 68 E) 70

Soru 15:

Which of the following is not true about the pie chart?

A) A pie chart is usually used for categoricaldata. B) In the pie chart components or outcomes of a total frequency is shown as sectors of a circle. C) In the pie chart, the categories are divided into slices/sectors. D) A pie chart usually shows the actual values. E) The drawing of a pie chart involves the calculation of angles for each slice/sector.

Soru 16:

For an observation that results in values 6,7,3,4,3,5,6,6 what is the median of this group?

A) 5 B) 5,5 C) 6 D) 6,5 E) 7

Soru 17:

Which of the following is true about cumulative frequency distribution table?

A) It could be easier or clearer to interpret the table when using percentage of the frequency B) It consists of classes and the number of elements in these classes C) It is more appropriate to use when data set is too large D) It is better to use if measurement is obtained using ratio scale E) It can be used to determine the number of elements that falls above or below a particular value

Soru 18:

What type of variable is a girl’s answer to a marriage offer?

A) continuous regular B) quantitative interval C) quantitative ratio D) qualitative ordinal E) qualitative nominal

Soru 19:

Region of Residence Field of Study Type of Transport Type of Housing Exam Grade Which of the above are nominal categorical variables?

A) I and II B) I, II and III C) II, III and IV D) I, II, III and IV E) II, III, IV and V

Soru 20:

The relation between two sets of data The most repeating observations Summary statistics (min, max, mean, median etc.) Which of the above could be identified using graphics?

A) Only III B) I and II C) I and III D) II and III E) I, II and III