Q2

Quiz by Dmitry Kislitsyn

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15 questions
• Q1

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

Time-series data

Ordinal data

Nominal level data

Quantitative data

45s
• 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

60s
• 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?

0.494

0.30

0.247

60s
• 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

45s
• 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

45s
• Q6

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

The approximate center of the data

The shape of the distribution

All of the above

45s
• 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

45s
• 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

45s
• 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

Histogram

Ogive

Pie chart

45s
• Q10

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

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.

45s
• Q11

What is the main problem with this data visualisation?

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

45s
• Q12

What is the main problem with this data visualisation?

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

45s
• Q13

What is the best way to correct the following chart?

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

45s
• Q14

What type of data visualisation is it?

Scatter plot

Line chart

Pie chart

Bar chart

45s
• Q15

What conclusion can you make from the following scatter plot?

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.

45s

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