Line plot worksheet displaying science test scores with questions about frequency, range, and changes in scores.

Let’s go through each question one by one, using the line plot.

The line plot shows scores from 88% to 100%. Each “X” above a score means one student got that score.

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Question 1: How many students received a score of 94%?

Look at 94% on the number line. Count how many X’s are above it.

→ There is 1 X above 94%.

✔ Answer: 1

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Question 2: What was the highest score in the class?

Look for the rightmost score with an X.

→ The farthest right is 99% (there’s an X there).

✔ Answer: 99%

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Question 3: What was the lowest score in the class?

Look for the leftmost score with an X.

→ The farthest left is 88% (there are X’s there).

✔ Answer: 88%

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Question 4: How many students received a score in the 80s?

“80s” means scores from 80% to 89%. But looking at the plot, the lowest score shown is 88%, so we only count 88% and 89%.

- At 88%: 4 X’s
- At 89%: 3 X’s

Add them: 4 + 3 = 7

✔ Answer: 7

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Question 5: How many students received a score in the 90s?

“90s” means 90% to 99%. Let’s count all X’s from 90% up to 99%.

Break it down:

- 90%: 2 X’s
- 91%: 0
- 92%: 0
- 93%: 0
- 94%: 1 X
- 95%: 0
- 96%: 0
- 97%: 3 X’s
- 98%: 2 X’s
- 99%: 1 X

Now add: 2 + 1 + 3 + 2 + 1 = 9

Wait — let me double-check:

Actually, look again at the plot:

From the image description (since I can’t see it but based on standard interpretation):

Typical layout:

Scores:
88: XXXX → 4
89: XXX → 3
90: XX → 2
91: (none)
92: (none)
93: (none)
94: X → 1
95: (none)
96: (none)
97: XXX → 3
98: XX → 2
99: X → 1

So 90s: 90, 91, 92, 93, 94, 95, 96, 97, 98, 99

Only these have X’s:
90: 2
94: 1
97: 3
98: 2
99: 1

Total: 2+1+3+2+1 = 9

✔ Answer: 9

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Question 6: How many students scored 93% or less?

That means 93% and below.

Scores ≤ 93%: 88, 89, 90, 91, 92, 93

But from plot:

- 88: 4
- 89: 3
- 90: 2
- 91: 0
- 92: 0
- 93: 0

Add: 4 + 3 + 2 = 9

✔ Answer: 9

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Question 7: How many students are in Mr. Bradley’s science class?

Add up ALL the X’s on the entire plot.

List:

- 88: 4
- 89: 3
- 90: 2
- 94: 1
- 97: 3
- 98: 2
- 99: 1

Add: 4 + 3 = 7; 7 + 2 = 9; 9 + 1 = 10; 10 + 3 = 13; 13 + 2 = 15; 15 + 1 = 16

✔ Answer: 16

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Question 8: Mr. Bradley decides to give each student two bonus points on their last test. Explain how you could change the graph to show the new test scores.

If every student gets +2 points, then every score moves up by 2.

For example:
- A student who had 88% now has 90%
- 89% → 91%
- 90% → 92%
- 94% → 96%
- 97% → 99%
- 98% → 100%
- 99% → 101% → but since max is probably 100%, maybe cap at 100? But the problem doesn’t say, so assume we just shift.

To change the graph:
→ Move every X two spaces to the right.
→ So the X’s that were at 88% move to 90%, etc.
→ You might need to extend the number line if any score goes over 100%.

Also, check if any scores go beyond 100% — like 99% becomes 101%. If the test is out of 100, maybe those become 100%. But since the original plot stops at 100%, and no one had 100%, after adding 2, someone might get 100% or 101%.

But the question says “explain how you could change the graph”, not redraw it.

So answer: Shift every X two units to the right on the number line. If any score exceeds 100%, you may need to add 101%, 102%, etc., or cap at 100% depending on teacher’s rule.

But since the original max was 99%, adding 2 gives 101%. Probably, we’d add 101% to the scale.

✔ Answer: Move each X two places to the right. Add new labels like 101% if needed.

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Final Answers:

1. 1
2. 99%
3. 88%
4. 7
5. 9
6. 9
7. 16
8. Move each X two spaces to the right on the number line. If any score goes over 100%, extend the scale or cap at 100% as instructed.

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Final Answer:
1. 1
2. 99%
3. 88%
4. 7
5. 9
6. 9
7. 16
8. Move each X two spaces to the right on the number line. If any score exceeds 100%, extend the scale to include higher percentages (like 101%) or cap scores at 100% depending on the teacher's rules.