AnswersPre-Algebra - MA3119 B-CRSummarizing Data Sets with Statistics

Summarizing Data Sets with Statistics Answers

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t
the difference between the first and sixth elements of the set as it is written above
t
the difference between the second and fifth elements of the set as it is written above
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the difference between the first and sixth elements of the set after it has been ordered from least to greatest
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the difference between the second and fifth elements of the set after it has been ordered from least to greatest
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Which set has the greatest range?

{
{10, 14, 8, 19, 22, 13, 44}
{
{19, 16, 50, 18, 29, 23, 37}
{
{11, 9, 31, 29, 15, 17, 20, 24}
{
{12, 6, 24, 20, 44, 15, 29}
3

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Question illustration
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She should have reordered the elements from least to greatest.
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She should have added the elements and divided by 9.
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She should have counted repeated elements only once.
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She should have found the difference between the first and last elements.
4

Swati played eight basketball games this season. Her point totals for each game were 8, 14, 4, 7, 6, 14, 4, and 7. What was the mean number of points she scored per game?

7
7
8
8
9
9
1
10
5

What is the range of this set of heights in centimeters? {140, 166, 132, 165, 152, 168, 181, 158, 173, 171, 180, 182, 163, 177, 180, 142, 147, 149, 178}

3
38
4
41
4
46
5
50
7

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the most and least points each player has scored in a game
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the number of games each player has played
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the average number of points each player’s team scores per game
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the total number of points each player has scored
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The lengths of Ty’s runs have greater variability because Ty had more rushing attempts.
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The lengths of Gajge’s runs have greater variability because there is a greater difference between his longest and shortest runs.
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Ty’s and Gajge’s runs have the same variability because they both average 4.0 yards per carry.
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Ty’s and Gajge’s runs have the same variability because they both had the same length shortest run.
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the difference between the least and greatest prices
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the sum of the prices
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the quotient of the difference between the least and greatest prices divided by 7
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the sum of the prices divided by 7
10

Jacqueline practiced drums four times last week for sessions of 40 minutes, 35 minutes, 45 minutes, and 30 minutes. Cassie practiced five times last week for sessions of 15 minutes, 30 minutes, 15 minutes, 15 minutes, and 50 minutes. Which statement is true based on the data above?

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The two girls practiced for the same total amount of time last week.
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The average length of time Cassie spent practicing is greater than the average length of time Jacqueline spent practicing.
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The difference in length between Cassie’s longest and shortest practice sessions was greater than the difference in length between Jacqueline’s longest and shortest sessions.
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The greatest amount of time either girl spent practicing was one of Jacqueline’s practice sessions.

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