• A. 12
• C. 13
• D. 14

Answer: Option C

Explanation:

• A. 1/9
• B. 4/6
• C. 4/9
• D. 1/6

Answer: Option A

Explanation:

• A. $1$
• B. $10$
• C. $15$
• D. $20$

Answer: Option D

Explanation:

• A. $1$
• B. $\frac{3}{8}$
• C. $\frac{8}{3}$
• D. None

Answer: Option B

Explanation:

• A. 4
• B. 8
• C. 16
• D. 32

Answer: Option A

Explanation:

• A. 5/18
• B. 1/4
• C. 2/9
• D. 7/36

Answer: Option B

Explanation:

• A. 20
• B. 25
• C. 30
• D. 35

Answer: Option C

Explanation:

• A. 34/35
• B. 27/35
• C. 8/35
• D. 3/35

Answer: Option A

Explanation:

• A. শাখা ও পত্রক লেখচিত্র (steam-and-leaf)
• B. আয়তলেখ (histogram)
• C. বক্স এবং হুইস্কার লেখচিত্র (box and whisker plot)
• D. অজিভ রেখা (ogive curve)

Answer: Option C

Explanation:

• A. 12
• B. 4.8
• C. 8
• D. 9.6

Answer: Option A

Explanation:

• A. 4Var(X) + 5
• B. Var(X)
• C. 2Var(X)
• D. 4Var(X)

Answer: Option A

Explanation:

• A. 4/6
• B. 3/8
• C. 1/4
• D. 3/4

Answer: Option A

Explanation:

• A. 1/60
• B. 1/12
• C. 7/60
• D. 9/60

Answer: Option A

Explanation:

• A. 10
• B. 24
• C. 6
• D. 5

Answer: Option A

Explanation:

• A. $\frac{\sum {\left(x_i-x\right)}^2}{n-1}$
• B. $\sqrt{\frac{\sum {\left(x_i-x\right)}^2}{n-1}}$
• C. $\frac{\sum \left(x_i-x\right)}{n-1}$
• D. $\frac{\sum \left|x_i-x\right|}{n-1}$

Answer: Option B

Explanation: