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Quiz by Dmitry Kislitsyn

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15 questions
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  • Q1

    A histogram is most commonly used to analyse which of the following?

    Time-series data

    Ordinal data

    Nominal level data

    Quantitative data

  • Q2

    The hotel manager has collected data on the number of rooms occupied each evening for the past 700 nights. The fewest rooms occupied during that period was 11 and the most was the capacity, 430. Based on this information, which of the following would be reasonable class limits for the first class if the manager wishes to use 8 classes to develop a frequency distribution?

    10 to <65

    0 to 40

    0 to 52.38

    11 to 19

  • Q3

    Recently a study of fans attending the FC Zenit soccer games was conducted and 500 fans were surveyed. In forming a frequency distribution of the number of kilometres fans traveled from home to the stadium, it was found that 247 fans traveled between 0 and 5 kilometres. Based on this information what was the relative frequency for this class?

    Can't be determined without more information




  • Q4

    Frequency distribution can be formed from which of the following types of data?

    Discrete only

    Continuous only

    Both discrete and continuous

    Only qualitative data

  • Q5

    Which of the following is NOT considered desirable when constructing a frequency distribution for continuous data?

    Mutually exclusive classes

    Equal-width classes

    All-inclusive classes

    Open-ended classes

  • Q6

    A histogram is used to display which of the following characteristics for a quantitative variable?

    The approximate center of the data

    The spread in the data

    The shape of the distribution

    All of the above

  • Q7

    When using Excel's Histogram option under the Data Analysis tool, the term bins refers to:

    The column where the data are located

    The mid-point of each class

    The lower limits of each class

    The upper limits of each class

  • Q8

    Which of the following is NOT true of a bar chart?

    It is used for numerical data

    It is used for categorical data

    It can show either frequency or relative frequency

    The bars can be either horizontal or vertical

  • Q9

    The city counsel has just voted to pass the city's budget for next year. If you were writing a report describing the budget so the citizens could understand how the total tax dollars will be spent, which of the following graphs might be most appropriate?

    Scatter diagram



    Pie chart

  • Q10

    Consider the following chart. Which of the following statements is most correct?

    Question Image

    There is a negative linear relationship between the two variables.

    There is no apparent relationship between the two variables.

    There is a perfect linear relationship between the two variables.

    There is a positive linear relationship between the two variables.

  • Q11

    What is the main problem with this data visualisation?

    Question Image

    Using bar chart with years is always incorrect.

    It is better to use pie chart in this case

    Truncated y-axis exaggerates the differences among years

    There is no problem, the chart is correct

  • Q12

    What is the main problem with this data visualisation?

    Question Image

    It is important to use different colors for different groups in a pie-chart

    Using pink color is always wrong

    Is is difficult to see the difference between Team A and Team C

    Pie chart should not be used for showing the differences between groups

  • Q13

    What is the best way to correct the following chart?

    Question Image

    There is no problem, the chart is correct

    It includes too much details. We can leave only 4-5 the most important countries and put all others into the category "Others"

    It is better to change the colors as a change of colour often implies a categorical change and we do not have the change of category here.

    It is better to use pie chart here, because pie charts are used to compare parts of the whole

  • Q14

    What type of data visualisation is it?

    Question Image

    Scatter plot

    Line chart

    Pie chart

    Bar chart

  • Q15

    What conclusion can you make from the following scatter plot?

    Question Image

    There is no clear relationship between GDP per capita and the share of out-of-pocket expenditures.

    The  share of out-of-pocket expenditures is always the same no matter GPD per capita

    On average, the higher GDP per capita, the higher share of out-of-pocket health expenditures.

    On average, the higher GDP per capita, the lower share of out-of-pocket health expenditures.


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