Seçmeli Ara Sınav - Statıstıcs I

Soru 1:

The graph shows the electricity, water and ADSL bills of a family. Which one of the following can be deduced, based on the data?

A) The highest bill is for March. B) The highest bill is for January. C) There is a negative relationship between electricity consumption and water consumption. D) ADSL bill is rising from January to March. E) Lowest bill is for ADSL.

Soru 2:

6, 7, 8, 3, 3, 6, 9, 7, 3 What is the mode of the given data set?

A) 3 B) 6 C) 7 D) 8 E) 9

Soru 3:

What is the midrange of the following data set? 10, 19, 11, 26, 26, 26, 18, 20, 35, 98, 11, 14, 18, 18, 26, 20, 48

A) 10 B) 26 C) 35 D) 54 E) 98

Soru 4:

What is the median of the following data set? 2, 4, 2, 6, 7, 9, 11, 17, 18, 14, 26, 30, 2, 2

A) 2 B) 9 C) 14 D) 30 E) 34

Soru 5:

Which of the following is not true about the dot plot?

A) A dot plot is a one-dimensional scatterplot of observed values of a variable. B) In order to create a dot plot one needs to identify the lowest and the highest value of the data set. C) If there are repeating observations (multiple occurrences), the dots are stacked up vertically. D) Dot plots tend to be useful to determine a vague point for location of center. E) Dot plot will be very useful when working with large number of observations.

Soru 6:

What is the geometric mean of the data set A=(6, 8, 9, 16, 36)?

A) 8 B) 12 C) 16 D) 18 E) 20

Soru 7:

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?

A) Pie chart B) Line chart C) Scatter plot D) Bar Chart E) Dot plot

Soru 8:

Your body temperature changes through exercises. What type of variable is it?

A) A textual variable B) A continuous interval-scale variable C) An ordinal categorical variable D) A nominal categorical variable E) A continuous ratio-scale variable

Soru 9:

Which one below is a type of bar chart where each bar is divided into subgroups proportional to the contribution a subgroup makes to associated bar?

A) Grouped Bar Chart B) Stacked Bar Chart C) Simple Bar Chart D) Horizontal Bar chart E) Vertical Bar Chart

Soru 10:

Which of the following are not done by using statistics?

A) analyse website traffic B) decide if medical treatments are effective C) analyse the examination grades D) check the financial transactions of a sports club E) interpret visitors’ data

Soru 11:

Which of the following variable is an example of interval scale?

A) Hours of sleep B) Inflation rate C) Income group D) Exam grade E) Educational level

Soru 12:

Which of the following is not variable?

A) silence B) altitude C) sound D) taste E) smell

Soru 13:

What is the arithmetic mean of the following data set? 2, 4, 4, 6, 7, 8, 10, 11, 14, 22, 28, 4

A) 4 B) 9 C) 10 D) 11 E) 12

Soru 14:

Widespread social media platforms you visit everyday are gathering information about your profile, friends, tendencies, behaviors and so. What are they working on?

A) Identity theft B) Security C) World peace D) Climate change E) Big data

Soru 15:

What is the midrange of the following data set? 11, 18, 10, 25, 25, 81, 26, 18, 20, 35, 14, 11, 18, 18, 25, 20, 48

A) 11 B) 18 C) 35 D) 46 E) 81

Soru 16:

The chart below shows the relation between humidity and temperature for a certain period of time. What type of relationship is there between temperature and humidity on the days the data recorded according to this chart?

A) Both the humidity and temperature are increasing. B) Both the humidity and temperature are decreasing. C) While the temperature is decreasing and humidity is increasing. D) There is a positive correlation between humidity and temperature. E) There is no correlation between humidity and temperature.

Soru 17:

Experimental study is a study in which the researcher manipulates some of the variables and try to determine how the manipulation influences other variables. In an observational study, researchers simply collect data based on what is seen and heard and infer based on the data collected. In an observational study, one or more independent variables are controlled so as to obtain information about their influence on the dependent variable. Which of the above statements are true?

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

Soru 18:

Statistics Computer Science Database Management Data Visualization Analytics Which of the above really mean the same thing?

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

Soru 19:

Age is a _______ scale data. Which of the following options fills the blank in the above sentence in the most correct way?

A) Ratio B) Interval C) Nominal D) Ordinal E) Qualitative

Soru 20:

In this type of measurement scale, there is a natural or zero-valued base value that cannot be changed. What is the name of this scale?

A) Nominal Scale B) Ordinal scale C) Cardinal Scale D) Interval Scale E) Ratio Scale