STATISTICS: 2.3 ADDITIONAL DISPLAYS OF
QUANTITATIVE DATA.
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Why do we draw time-series plots? - Answer: Time-series plots are used to identify
trends in the data over time
What type of variable is required when drawing a time-series plot? - Answer:
Quantitative variable is required when drawing a time-series plot.
If the value of a variable is measured at different points in time, the data are referred to
as time-series data. A time-series plot is obtained by plotting the time in which a variable
is measured on the horizontal axis and the corresponding value of the variable on the
vertical axis. Thus, a quantitative variable is required. The variable can be at the interval
or ratio level of measurement, and it can be discrete or continuous.
What is a Ogive - Answer: An ogive is a graph that represents the cumulative frequency
or cumulative relative frequency for the class. It is constructed by plotting points whose
x-coordinates are the upper class limits and whose y-coordinates are the cumulative
frequencies or cumulative relative frequencies. After the points for each class are
plotted, line segments are drawn connecting consecutive points. An additional line
segment is drawn connecting the point for the first class to the horizontal axis at a
location representing the upper limit of the class that would precede the first class (if it
existed).
To Determine the Misery Index - Answer: The misery index is defined as the sum of the
unemployment rate and the inflation rate. According to the misery index, which year was
more "miserable," year 17 or year 19?
To determine the misery index for each year, first estimate the unemployment and
inflation rates for each year.
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
QUANTITATIVE DATA.
Quality content you can rely on!
Why do we draw time-series plots? - Answer: Time-series plots are used to identify
trends in the data over time
What type of variable is required when drawing a time-series plot? - Answer:
Quantitative variable is required when drawing a time-series plot.
If the value of a variable is measured at different points in time, the data are referred to
as time-series data. A time-series plot is obtained by plotting the time in which a variable
is measured on the horizontal axis and the corresponding value of the variable on the
vertical axis. Thus, a quantitative variable is required. The variable can be at the interval
or ratio level of measurement, and it can be discrete or continuous.
What is a Ogive - Answer: An ogive is a graph that represents the cumulative frequency
or cumulative relative frequency for the class. It is constructed by plotting points whose
x-coordinates are the upper class limits and whose y-coordinates are the cumulative
frequencies or cumulative relative frequencies. After the points for each class are
plotted, line segments are drawn connecting consecutive points. An additional line
segment is drawn connecting the point for the first class to the horizontal axis at a
location representing the upper limit of the class that would precede the first class (if it
existed).
To Determine the Misery Index - Answer: The misery index is defined as the sum of the
unemployment rate and the inflation rate. According to the misery index, which year was
more "miserable," year 17 or year 19?
To determine the misery index for each year, first estimate the unemployment and
inflation rates for each year.
1
APPHIA - Crafted with Care and Precision for Academic Excellence.
