DJM Topic 2 - Visualizing Time Series Data

Question 1

Time series analysis

Answer 1

Visualizing the quantitative relationship through time

Question 2

Trend

Answer 2

The overall tendency of values to increase, decrease, or remain stable over time

Question 3

Variability

Answer 3

The average degree of change from one point to the next over time

Question 4

Rate of change

Answer 4

Useful for comparing multiple series by considering percentage difference

Question 5

Co-variation

Answer 5

When two time series relate, with changes in one reflected in the other

Question 6

Cycles

Answer 6

Patterns that repeat at regular intervals like daily, weekly, or seasonally

Question 7

Exceptions

Answer 7

Values that fall outside the norm

Question 8

Line charts

Answer 8

Commonly used for analyzing patterns and exceptions in time series

Question 9

Bar charts

Answer 9

Useful for emphasizing and comparing individual values

Question 10

Dot plots

Answer 10

Good for analyzing irregular time intervals like certain days

Question 11

Radar charts

Answer 11

Can compare cycles and spot exceptions

Question 12

Heatmaps

Answer 12

Effective for analyzing high-volume cyclical patterns and exceptions

Question 13

Animated scatterplots

Answer 13

Used to analyze changes in correlation over time

Question 14

Discrete data

Answer 14

Values from specific time points with a finite number of possibilities

Question 15

Continuous data

Answer 15

Values can be measured at any time and are constantly changing

Question 16

Displaying discrete data

Answer 16

Can use bar charts, stacked bar charts, or dot plots

Question 17

Displaying continuous data

Answer 17

Can use line charts or step charts

Question 18

Aggregating time intervals (1)

Answer 18

Viewing data at different time intervals to see patterns

Question 19

Viewing time in context (2)

Answer 19

Examining data over a longer period of time

Question 20

Trend lines (3)

Answer 20

Enhance perception of high-level patterns, but be aware of time period used

Question 21

Missing values (4)

Answer 21

Omit from display rather than treating as zero

Question 22

Logarithmic scales and percentages (5)

Answer 22

Used to compare rates of change

Question 23

Overlapping time scales (6)

Answer 23

Used to compare cyclical patterns

Question 24

Stacking line charts (7)

Answer 24

Used to compare multiple variables in different units