1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natasha_Volkova [10]
3 years ago
10

Find the population variance of: 4 6 8 9 9 round to the nearest hundredth

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
5 0

Answer:

Step-by-step explanation:

To find the population variance, we first need the mean:

\bar{x}=\frac{4+6+8+9+9}{5}=\frac{36}{5}=7.2 so the mean is 7.2. To find the population variance (which is almost exactly the same as the sample variance except for a small difference in the denominators of the formula) we have to take each number minus the mean, and then square the difference. Add together all these squared numbers and then divide by the number of numbers. Like this:

(4-7.2)^2=10.24\\(6-7.2)^2=1.44\\(8-7.2)^2=.64\\(9-7.2)^2=3.24\\(9-7.2)^2=3.24

Add together those numbers and divide them by 5:

\sigma=\frac{10.24+1.44+.64+3.24+3.24}{5}=\frac{18.8}{5}=3.76

You might be interested in
The cost of renting a car from us is just $19.25 per day
igomit [66]
19.25x Hope this helped you....
3 0
3 years ago
What is an equation of the line that passes through the point (1,−7) and is parallel to the line 3x+y=3
levacccp [35]
If I’m not wrong, I got y=-3x-4
6 0
3 years ago
1,508 rounded to the nearest hundred
DENIUS [597]

Answer:

1,500

Step-by-step explanation:

hope this helped!

6 0
2 years ago
Read 2 more answers
What is the ratio and diameter of the following Circle 4.2 cm ​
gladu [14]

Answer:

<em>4/2 </em>is the ratio and the diameter is <em>2</em>

Step-by-step explanation:

<em>4/2 </em>is a fraction and <em>2 </em>is when you divide 4/2. Correct me if I am wrong.

8 0
3 years ago
To make fruit punch, Amar mixes 1 scoop of fruity powder with 5 cups of water. Which recipe ratio will NOT taste the same as Ama
Tju [1.3M]

Answer:

A

Step-by-step explanation:

The ratio is 1:5 so you're looking for the one that is not 1:5. A is 1:3

4 0
2 years ago
Read 2 more answers
Other questions:
  • Select the best definitions of population and sample. A sample is the group from whom information is being collected. A populati
    6·1 answer
  • Alberto is saving money to buy a pair of shoes that cost $58 He already saved $ 32 he still needs to save d dollars
    11·2 answers
  • The drawing is composed of a rectangle and a semicircle. Find the area of the figure to the nearest unit. Please explain, thank
    10·1 answer
  • What is the vertex of <br> y = (x-2)^2 +5?
    5·2 answers
  • A​ T-shirt is launched from a height of 66 feet with an initial upward velocity of 6464 feet per second. The​ T-shirt is caught
    5·1 answer
  • Help me PLS!!!! &lt;3
    12·1 answer
  • What's the opposite of -1.5 and 3/4?
    7·2 answers
  • URGENT DUE TODAY I WILL GIVE BRAINLIEST I PROMISE
    12·1 answer
  • Solve each equation mentally 1/7 × x = 1
    12·1 answer
  • If I am 165 centimeter tall. And Roberto is 1.7 meters tall who is taller?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!