Answer: c. Stratified sampling
Step-by-step explanation:
Stratified sampling is a sampling method in which the studied population is divided into separate groups or subgroups known as strata, there after a simple random sample can then be drawn from each separate or subgroups.
One of the main merit of stratified sampling is that it helps to reduce the size of sample required to get accurate result.
Answer:D
Step-by-step explanation:
If you know the base and area of the triangle, you can divide the base by 2, then divide that by the area to find the height
Step 1. 14 ÷ 2 = 7
Step 2. 45.5 ÷ 7 = 6.5
Height = 6.5 cm
Answer:
B. 8
Step-by-step explanation:
Answer: 0.04166
Step-by-step explanation:
1.25+(-1/3) +(-7/8)
1.25 - 1/3 - 7/8
= -8/24 - 21/24
= -8 - 21/ 24
= -29/24
= 1.25 - 29/24
= 1.25 - 1.20833
= 0.04166
