A Disadvantage of Using Grouping (A Frequency Table) with Sample

question 117

Multiple Choice

A disadvantage of using grouping (a frequency table) with sample data is that

• A) calculations involving central tendency and variation are more complicated than central tendency and variation calculations based on ungrouped data.
• B) the descriptive statistics are less precise than the descriptive statistics obtained using ungrouped data.
• C) the interpretation of the grouped data descriptive statistics is meaningless.
• D) it is much more difficult to summarize the information than it is with the ungrouped data.

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Definitions:

Half-life

The time required for half the atoms of a radioactive substance to decay into a stable form.

Cesium-137

A radioactive isotope of cesium with a half-life of about 30.17 years, commonly used in medical applications and industrial gauges.

Gamma Ray Emission

A type of radioactive decay where an unstable nucleus emits a gamma ray to become more stable.

Beta Particle Emission

A radioactive decay process where an unstable atomic nucleus emits a beta particle, which is a high-speed electron or positron, as part of the transformation to a stable state.