DrLewis Records the Time It Takes University Students to Read

question 71

Multiple Choice

Dr.Lewis records the time it takes university students to read a brief passage.Using an eye-tracking device,he also measures a) how long the students look at each word and b) the number of times their eyes dart backward,from right to left.He should find a positive correlation between the total reading time for the passage and ___.

• A) how long students look at each word
• B) the number of backward eye movements students make
• C) both the length of time the students look at each word and the number of backward eye movements students make
• D) neither the length of time the students look at each word, nor the number of backward eye movements students make

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Definitions:

Mean

The arithmetic average of a set of numbers, found by dividing the sum of all numbers by the count of numbers.

Discrete Probability Distribution

A statistical function that describes the likelihood of each possible outcome of a discrete random variable occurring.

Mean

The average of a set of values, calculated by summing all the values and dividing by the number of values.

Discrete Random Variable

A random variable that has countable outcomes, such as the number of heads in a series of coin flips.