Answer:
Although the data in the question is not clearly stated, the correct date is stated in the image attached to this answer and it is also stated below
What is the sample variance of the following data, which describe the height growth of 10 foxtail pine trees grown in a common garden ( give your answer to one decimal place)?
Tree Height(cm)
1 25.6987
2 19.6587
3 11.4780
4 9.11130
5 16.8747
6 14.7771
7 33.0001
8 24.0000
9 19.4441
10 14.1010
answer 51.9
Explanation:
what is a sample variance?
A sample variance (denoted as 
) is used to calculate how far a set of numbers are from the mean value of the set. Mathematically, it is defined as the average of the squared deviations from its mean value.
Let the individual value of the trees be represented as x₁ to x₁₀
Let the total number of Foxtail pine trees be N
To calculate the standard deviation, we will first calculate the mean or average of the height of the trees
1. Mean (μ) = 
= 
= 
2. we need to calculate the sum of the squares of the individual deviations.
∑[x-μ]²= 
3. Now the variance is ; (∑[x-μ]²) ÷ (N-1) and since N=10, then N-1 = 10-1 = 9
= 
we were asked the give our answer to one decimal place
∴ Variance()= 51.9
Answer:
A: True
Explanation:
both of these are examples of passive transport :)
Answer:
In photosynthesis, energy from light is used to convert carbon dioxide and water into glucose and oxygen.
Explanation:
Answer:
The phloem is responsible for transporting food from leaves to other parts of the plant.
The transport of pholem is bidirectional and changes the movement of particles according to the season. Generally, the transportation occurs in the direction of the source to sink but in spring season the direction is opposite that is from sink to source because the source and sink are n opposite sides. So in spring season, the stem tubers are sources and the growing leaves are sinks.
Answer:
Delegates at the 1992 Fourth World Congress on National Parks and Protected Areas, a decennial international conference that serves as a global forum for setting the agenda for protected areas worldwide, recommended that “protected areas cover at least 10 percent of each biome by the year 2000.”
