Chapter 2 Exercise
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Grade 5 Enrichment · Assessment

Lesson 2.7 — Chapter 2 Exercise

Simple Statistics: practice with worked explanations, with clarified instructions and all tables and graphs included on this page.

10 questions 12 points each 120 points total Tables · bar charts · line graphs

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Simple Statistics

Questions 1–10 · 12 points each · 120 points total

112 pointsNot answered
People's Road Primary School's donations to Project Hope are shown below. Calculate the school's total donation and the average donation per grade, then fill in the two blanks.
GradeTotalGrade 1Grade 2Grade 3Grade 4Grade 5Grade 6Average
Amount (yuan)
242285320360352481
212 pointsNot answered
Three fifth-grade classes planted trees. Every student planted the same number of trees, and the three classes planted 360 trees altogether. Complete the statistical table.
Grade 5 Tree-Planting Statistics
ClassNumber of studentsTrees planted
Total
Class 5(1)40120
Class 5(2)
Class 5(3)45
312 pointsNot answered
The table shows the mathematics scores of Student A and Student B. Student A's average on Tests 1 and 2 equals Student B's average on Tests 3 and 4. Student B's Test 5 score equals Student B's average over all five tests. Student A's five-test average is 5 points lower than Student B's Test 5 score. Find a, b, and c.
StudentTest 1Test 2Test 3Test 4Test 5
Student A82a75b98
Student B721008076c
412 pointsNot answered
Ninety-seven fifth-grade students joined the school's stamp-collecting club and collected 2,367 stamps altogether. The bar chart shows the mean number of stamps collected per club member from each of the three classes. Of these 97 club members, 34 are from Class 5(1), with a mean of 28 stamps per member. How many of the club members are from Class 5(2), and how many are from Class 5(3)?
Average Stamps Collected per Student
Vertical axis: stamps per student
512 pointsNot answered
Xiaoqiao rode from home to a library 5 km away to borrow books. His speed going to the library was 7.5 km/h, his return speed was 5 km/h, and he spent 2/3 hour borrowing books at the library. He rode at constant speed on each leg, with no stop except at the library, and returned along the same route. Complete the distance-from-home graph.
Add four points in journey order: leaving home, arriving at the library, leaving the library, and arriving home. The page joins them with straight segments. Click or tap the graph to add a point. Time snaps to the nearest third of an hour (20 minutes); distance snaps to the nearest half kilometre. The point list shows the exact coordinates added. You can also enter a time and distance below, then choose Add point.
Blank distance-time graph for Question 5 Time from 0 to 3 hours on the horizontal axis and distance from home from 0 to 5 kilometers on the vertical axis. Student-added points and lines appear on this graph.

For time, enter a decimal, a fraction such as 1/3, or a mixed number such as 1 2/3. Distance must be from 0 to 5 km.

No points plotted yet.
612 pointsNot answered
The line graph shows temperatures recorded at one location during one day. What was the average of the six recorded temperatures from 2:00 to 17:00?
Temperature During One Day
Text alternative for the graph

2:00 — 12°C; 5:00 — 18°C; 8:00 — 21°C; 11:00 — 24°C; 14:00 — 32°C; 17:00 — 22°C.

712 pointsNot answered
The graph shows the relationship between time and distance for Xiaoming and Xiaohua in an 800-meter race.
800-Meter Race
Text alternative for the graph

Xiaoming (dashed): (0 min, 0 m), (2 min, 500 m), (4 min, 650 m), (6 min, 800 m). Xiaohua (solid): (0 min, 0 m), (3.5 min, 500 m), (4.5 min, 800 m).

812 pointsNot answered
On Sunday, Xiaohua rode from home to a library 5 km away to borrow books. His journey is shown in the graph.
Xiaohua's Library Journey
912 pointsNot answered
The graph is a record of a patient's body temperature.
Patient Temperature Record
Text alternative for the graph

Jun 1 6:00 — 39.5°C; 12:00 — 38°C; 18:00 — 39°C. Jun 2 0:00 — 39.2°C; 6:00 — 38°C; 12:00 — 37.5°C; 18:00 — 37°C. Jun 3 0:00 — 36.8°C; 6:00 — 37°C; 12:00 — 37.2°C; 18:00 — 37.1°C. Jun 4 0:00 — 37°C; 6:00 — 36.9°C.

1012 pointsNot answered
The graph records the time and height of two model airplanes during one flight.
Model-Airplane Flight Records
Text alternative for the graph

Plane A (dashed): 0 m at 0 s, 10 m at 5 s, 16 m at 10 s, 24 m at 15 s, 28 m at 20 s, 25 m at 25 s, 27 m at 30 s, 15 m at 35 s, 0 m at 40 s. Plane B (solid): 0 m at 0 s, 12 m at 5 s, 20 m at 10 s, 24 m at 15 s, 24 m at 20 s, 20 m at 25 s, 8 m at 30 s, 0 m at 35 s.

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