When Carrying Out a Chi-Square Test for Independence, a Good

question 71

Multiple Choice

When carrying out a chi-square test for independence, a good check on your arithmetic in figuring the expected frequencies is to make sure that:

• A)the expected frequency of each cell is no larger than the observed frequency
• B)the sum of all the expected frequencies times the degrees of freedom equals the sum of all the observed frequencies
• C)for each row and column, the sum of the observed frequencies and the sum of the expected frequencies come out to be the same
• D)for each row, the sum of all the expected frequencies equals the observed frequencies, minus 1, for each column

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Definitions:

Titin

A large protein found in muscle tissue that plays a role in the elasticity and contraction of muscle.

Isometric Contraction

A type of muscle contraction in which the muscle generates force without changing its length, maintaining a constant length of the muscle.

Isotonic Contraction

A type of muscle contraction in which the muscle changes length while the tension remains constant, enabling movement.

Muscle Fibers

The elongated, narrow cells composing muscles, which can contract to facilitate movement.