<u>If the </u><u>data presentation</u><u> in Exercise 2 is varied by organizing the data into classes, the data presentation is called a </u><u>grouped frequency distribution </u><u>. If one class in such a distribution is 80-89, the lower class limit is 80 and the upper class limit is 89.</u>
What is the formula for grouped frequency distribution?
- A grouped frequency distribution shows the scores by grouping the observations into intervals and then lists these intervals in the frequency distribution table.
- The intervals in grouped frequency distribution are called class limits.
What is the formula for grouped frequency distribution?
- In other words, the mean for a population can be found by dividing ∑ m f by , where is the midpoint of the class and is the frequency.
- As a result, the formula μ = ∑ m f N can be written to summarize the steps used to determine the value of the mean for a set of grouped data.
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<u>The complete question is - </u>
If the data presentation in Exercise 2 is varied by organizing the data into classes, the data presentation is called a ______________. If one class in such a distribution is 80-89, the lower class limit is 80 and the upper class limit is 89.
Answer:
First one is sin 27 and cos 63
second one is sin 60
Step-by-step explanation:
Answer:
![NP = 24.18](https://tex.z-dn.net/?f=NP%20%3D%2024.18)
Step-by-step explanation:
Given
![NK = 7x - 1](https://tex.z-dn.net/?f=NK%20%3D%207x%20-%201)
![NM = 10x - 13](https://tex.z-dn.net/?f=NM%20%3D%2010x%20-%2013)
![KM = 24](https://tex.z-dn.net/?f=KM%20%3D%2024)
See attachment
Required
Length of NP
First, calculate the value of x
![NK = NM](https://tex.z-dn.net/?f=NK%20%3D%20NM)
So:
![7x -1 = 10x - 13](https://tex.z-dn.net/?f=7x%20-1%20%3D%2010x%20-%2013)
Collect like terms
![10x - 7x = 13 - 1](https://tex.z-dn.net/?f=10x%20-%207x%20%3D%2013%20-%201)
![3x =12](https://tex.z-dn.net/?f=3x%20%3D12)
Solve for x
![x = 4](https://tex.z-dn.net/?f=x%20%3D%204)
To solve for NP, we consider right triangle ![\triangle NKP](https://tex.z-dn.net/?f=%5Ctriangle%20NKP)
Where
![NK = 7x - 1](https://tex.z-dn.net/?f=NK%20%3D%207x%20-%201)
![NK = 7 * 4 - 1](https://tex.z-dn.net/?f=NK%20%3D%207%20%2A%204%20-%201)
![NK = 27](https://tex.z-dn.net/?f=NK%20%3D%2027)
![KP =\frac{1}{2}KM](https://tex.z-dn.net/?f=KP%20%3D%5Cfrac%7B1%7D%7B2%7DKM)
![KP =\frac{1}{2} * 24](https://tex.z-dn.net/?f=KP%20%3D%5Cfrac%7B1%7D%7B2%7D%20%2A%2024)
![KP =12\\](https://tex.z-dn.net/?f=KP%20%3D12%5C%5C)
Using Pythagoras theorem, we have:
![NK^2 = KP^2 + NP^2](https://tex.z-dn.net/?f=NK%5E2%20%3D%20KP%5E2%20%2B%20NP%5E2)
![27^2 = 12^2 + NP^2](https://tex.z-dn.net/?f=27%5E2%20%3D%2012%5E2%20%2B%20NP%5E2)
![729 = 144 + NP^2](https://tex.z-dn.net/?f=729%20%3D%20144%20%2B%20NP%5E2)
Collect like terms
![NP^2 = 729 - 144](https://tex.z-dn.net/?f=NP%5E2%20%3D%20729%20-%20144)
![NP^2 = 585](https://tex.z-dn.net/?f=NP%5E2%20%3D%20585)
Take square roots
![NP = \sqrt{585](https://tex.z-dn.net/?f=NP%20%3D%20%5Csqrt%7B585)
![NP = 24.18](https://tex.z-dn.net/?f=NP%20%3D%2024.18)
Answer:
True i think
Step-by-step explanation:
Answer:
A is in line with slope =2/3 and yintercept at (0,-2)