Math Is Fun Forum

mathland

Member

Registered: 2021-03-25

Posts: 444

Exam Scores

The table shows the mathematics
entrance test scores x and the final examination scores
y in an algebra course for a sample of 10 students.

x: 22 29 35 40 44 48 53 58 65 76
y: 53 74 57 66 79 90 76 93 83 99

(a) Sketch a scatter plot of the data.

(b) Find the entrance test score of any student with a
final exam score in the 80s.

(c) Does a higher entrance test score imply a higher
final exam score? Explain.

1. For part (a), I think plotting points is what needs to be done.

2. For part (b), the student with an entrance x score of 65, earned a final exam score of 83. Correct?

3. For part (c), according to the table, the answer is no. For example, the student with an entrance test score of 48 earned a final exam score of 90. A student with an entrance test score of 65 earned a final exam score of 83. A high entrance test score does not guarantee a high final exam score.

You say?

Bob

Administrator

Registered: 2010-06-20

Posts: 10,580

Re: Exam Scores

http://www.mathisfunforum.com/viewtopic.php?id=26056

?????

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 47,945

Re: Exam Scores

Hi,

In order to have equal opportunities to all members in the forum, I suggest the number of topics is restricted to 5 in each topic per day. The flooding of posts by a member indiscriminately has to be put to an end, in the interests in the forum. Moreover, 'Help' is for those who are in need, not for exhibiting a person's capabilities in math or any other subject.  If a member genuinely has a query for which a solution is required, he or she can post anytime.

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

mathland

Member

Registered: 2021-03-25

Posts: 444

Re: Exam Scores

http://www.mathisfunforum.com/viewtopic.php?id=26056

?????

I forgot that this thread had already been posted. Sorry about that. What STORROR clips on You Tube.