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Exam 5: Lists and Dictionaries

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Question 31

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What statement correctly defines what a median is?

A) A median is the minimum value that is smaller than all other values in a set.
B) A median is the maximum value that is greater than all other values in a set.
C) A median is the value that is less than half the numbers in a set and greater than the other half.
D) A median is the sum of all odd values in a set.

E) B) and C)
F) B) and D)

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Question 32

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The print function strips the quotation marks from a string, but it does not alter the look of a list.

A) True
B) False

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Question 33

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A list is a sequence of data values known by either of what two terms? (Choose two.)

A lookup table is a type of dictionary.

A function can be defined in a Python shell, but it is more convenient to define it in an IDLE window, where it can be saved to a file.

The is operator has no way of distinguishing between object identity and structural equivalence.

The median of a list of values is the value that occurs most frequently.

A list is immutable.

When declaring a tuple, you enclose the tuple's elements in what two characters?

A Python dictionary is written as a sequence of key/value pairs separated by commas. These pairs are sometimes called indexes.