Statistical Charts and Digrams (Copy)
1.
The table shows favourite fruits of 40 pupils:
Apple=10, Banana=15, Orange=5, Grapes=10.
Draw a bar chart.
2.
From Q1, which fruit is least popular?
3.
The table shows students’ pets: Dog=20, Cat=15, Rabbit=5, Fish=10.
Draw a pie chart.
4.
From Q3, what angle represents Dogs?
5.
From Q3, what fraction of students own Cats?
6.
The data shows sports choices: Football=12, Cricket=8, Hockey=10.
Draw a pictogram, using one symbol = 2 students.
7.
From Q6, how many symbols represent Football?
8.
The table shows sales of pens over 5 days: Mon=20, Tue=30, Wed=25, Thu=15, Fri=10.
Draw a bar chart.
9.
From Q8, on which day were most pens sold?
10.
The data shows marks of 20 pupils grouped:
0–9: 3, 10–19: 6, 20–29: 7, 30–39: 4.
Draw a frequency distribution table.
11.
From Q10, which class interval has highest frequency?
12.
In a survey, 60 people’s drink preferences were: Tea=30, Coffee=20, Juice=10.
Draw a pie chart.
13.
From Q12, what angle represents Coffee?
14.
The following is a dual bar chart showing number of boys and girls in classes A, B, and C:
Class A: Boys=12, Girls=14
Class B: Boys=10, Girls=16
Class C: Boys=8, Girls=12
Interpret which class has more girls than boys.
15.
From Q14, which class has equal total boys and girls (same total)?
16.
The table shows TV programmes watched by 50 people: News=15, Drama=20, Sports=10, Other=5.
Draw a pictogram using one symbol=5 people.
17.
From Q16, how many symbols represent Drama?
18.
The table shows monthly rainfall (mm): Jan=20, Feb=40, Mar=60, Apr=80.
Draw a bar chart.
19.
From Q18, which month had least rainfall?
20.
From Q18, what is the difference between March and Jan rainfall?
21.
The data shows sales of fruits: Apple=25, Banana=35, Mango=40.
Draw a pie chart.
22.
From Q21, what angle represents Mango?
23.
From Q21, what percentage represents Apple?
24.
A composite (stacked) bar chart shows sales of two shops (A and B) for 3 products:
Product X: A=20, B=10
Product Y: A=15, B=25
Product Z: A=30, B=20
Which product has highest combined sales?
25.
From Q24, what is the total sales of Shop A?
26.
The number of cars in a car park: Red=15, Blue=25, Black=10.
Draw a pictogram, where 1 car = 5.
27.
From Q26, how many symbols represent Blue?
28.
The frequency distribution of test marks is:
0–4: 2, 5–9: 4, 10–14: 6, 15–19: 3, 20–24: 5.
Which class interval has highest frequency?
29.
From Q28, what is the total number of students?
30.
Explain one advantage of using a pie chart compared to a bar chart.
1.
Bar chart drawn with heights proportional to: Apple=10, Banana=15, Orange=5, Grapes=10.
2.
Least popular = Orange (5).
3.
Pie chart drawn with 360° split in proportion: Dog=20, Cat=15, Rabbit=5, Fish=10.
4.
Dogs: 20/50 × 360 = 144°.
5.
Cats: 15/50 = 3/10 of circle.
6.
Pictogram: Football=12, Cricket=8, Hockey=10. One symbol=2 students → Football=6 symbols, Cricket=4, Hockey=5.
7.
Football = 6 symbols.
8.
Bar chart with heights: Mon=20, Tue=30, Wed=25, Thu=15, Fri=10.
9.
Most pens sold on Tuesday (30).
10.
Frequency distribution:
0–9: 3, 10–19: 6, 20–29: 7, 30–39: 4.
11.
Highest frequency class = 20–29 (7).
12.
Pie chart drawn with proportions Tea=30, Coffee=20, Juice=10.
13.
Coffee: 20/60 × 360 = 120°.
14.
More girls than boys in Classes B and C.
15.
Totals: A=26, B=26, C=20. Equal totals in A and B.
16.
Pictogram: News=15, Drama=20, Sports=10, Other=5. One symbol=5 people → News=3, Drama=4, Sports=2, Other=1.
17.
Drama = 4 symbols.
18.
Bar chart with heights: Jan=20, Feb=40, Mar=60, Apr=80.
19.
Least rainfall = January (20 mm).
20.
Difference = 60−20= 40 mm.
21.
Pie chart drawn with Apple=25, Banana=35, Mango=40.
22.
Mango: 40/100 × 360 = 144°.
23.
Apple: 25/100 = 25%.
24.
Combined sales: X=30, Y=40, Z=50. Highest = Z.
25.
Total Shop A = 20+15+30 = 65.
26.
Pictogram: Red=15 → 3 symbols, Blue=25 → 5, Black=10 → 2.
27.
Blue = 5 symbols.
28.
Highest frequency = 10–14 (6).
29.
Total students = 2+4+6+3+5 = 20.
30.
Pie chart shows proportion of the whole clearly, while bar chart is better for comparing actual quantities.