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
Inga [223]
2 years ago
9

the following data represent the number of people aged 25-64 years covered by health insurance (private or government) in 2018.

approximate the mean and standard deviation
Mathematics
1 answer:
astraxan [27]2 years ago
5 0

Answer:

mean = find the total of people in such data by adding up all the totals of people represented by each age then  divide that total by 2.

mean = with cumulative or frequency graphs if the numbers range individually like 25-30 and 30-35 etc and so on then you take the midpoint age and multiply it by the frequency number in new column add up both columns then divide by smaller total.

mean = histogram total number of data ie) from 270 people (80 x 0 = 0), (40 x 2 = 0) and so on multiplying the frequency. then add them all up in new column ie) 380 among 270 people = 1.4  

mode = histogram highest box

median = histogram add up all data number divided by 2 and can draw this on graph as they sort of are in order ie) 15 to the left and 15 to the right

To find standard deviation you need the copulative formula and the notation change for sample shows the small m and s to represent standard deviation ie) m-n is a notation difference for samples of population's

n = number of scores ie)  = 50  

Ex = then sum of x  = would be the collective total  ie) = 270

m = 270/50 = 5.4

Ex^2 = 270 x 270 = 72900   (the square of the total population)

SS = Sum of squares = 72,900 - ( 270^2 / 50) are all the variables.

is the formula  = 71,442

the root of SS -1

S^2 = 270 / (50 -1) =  270/49 = 5.51

S = sqrt S^2 = sqrt SS /n-1 = sq rt 50 = and you get your answer here.

Standard Deviation on data example here shown is;

S = sqrt 5.51 = sqrt 71442 / n-1 = sq rt 71442/ 50-1 = sq rt 71442/49 = 38.1837662  from a 270 population that exists with 50 age group 25 -75 to show the ease here and how to remember.

Just retrace and where 270 is change for total

Where 50 is put 64-25 = 39

and where n-1 is put 39-1 and always subtract first before dividing as the formula protects the brackets as seen in bold.

As your very last formula is S = SS/n-1

Step-by-step explanation:

You might be interested in
A 60 by 80-foot rectangular walk in a park surrounds a flower bed. If the walk is of uniform width and its area is equal to the
alekssr [168]

Answer: 17.14 ft

<u>Step-by-step explanation:</u>

The area of the flower bed is 60 ft x 80 ft = 4800 ft²

The perimeter of the sidewalk that surrounds the flower bed is:

  •   2(60 ft) + 2(80 ft)
  • = 120 ft + 160 ft
  • = 280 ft

The area of the sidewalk is:

  • perimeter x width
  • = 280w

area of sidewalk = area of flower bed

280w = 4800

\text{w}=\dfrac{4800}{280}

  =\dfrac{120}{7}

  ≈ 17.14


8 0
2 years ago
A Poker club has 10 members. A president and a vice-president are to be selected. In how many ways can this be done if everyone
Nesterboy [21]

Answer:

90 different ways

Step-by-step explanation:

We have a total of 10 members, and we want to find how many groups of 2 members we can have, where the order of each member in the group of 2 is important, so we have a permutation problem.

To solve this problem, we need to calculate a permutation of 10 choose 2.

The formula for a permutation of n choose p is:

P(n, p) = n! / (n - p)!

So we have:

P(10, 2) = 10! / (10 - 2)!

P(10, 2) = 10! / 8!

P(10, 2) = 10*9 = 90

So there are 90 different ways of choosing a president and a vice-president.

7 0
3 years ago
Glenda and penny are doing a sack race. Glenda jumps forward 18 inches each time she jumps. Each of Penny’s hops is 15 inches. H
il63 [147K]
I’m sorry I don’t have the answer but Glenda and Penny really need to figure out there problems
3 0
2 years ago
There are 5,280 feet in a mile. What part of a mile, in decimal form, will you drive until you reach the exit?
Arlecino [84]
5.280 because I got it
3 0
2 years ago
A seal dove 95 meters below the surface of the water to reach a fish. It traveled 18% of the total distance every second.
BlackZzzverrR [31]
95*18%
18%=0.18
95 x 0.18 =17.1
Now, multiply 17.1 by 5 = 85.5
4 0
3 years ago
Other questions:
  • Please help! : What is the actual length of a window that is 1 1/4 inches long on a drawing with a scale of 1 inch= 6 feet? This
    13·1 answer
  • t takes about 14 person-hours of labor to break up a driveway and clear away the rubble. It takes about 8 person-hours of labor
    12·2 answers
  • Which is one way to check 102 ÷ 6 = 17
    9·2 answers
  • The height of a prism with equilateral triangular base is 25 cm. If the perimeter of the base of the prism is 18 cm, find the vo
    7·1 answer
  • the length of the rectangle is x + 10 the width of the rectangle is x +2 please determine the area of the rectangle. you may sho
    13·2 answers
  • The ratio of the cost of a shirt to the cost of a jacket is 2:5. If the jacket cost $240 more than the shirt,
    9·1 answer
  • How do you calculate an 1/8 of 60?
    14·1 answer
  • Heather is a software saleswoman. her base salary is 1900, and she makes an additional $40 for every copy of math is fun she sel
    12·1 answer
  • Find the value of x to the nearest tenth. 6 4 5​
    5·1 answer
  • Use the distributive property to simplify: 3 - 4(7e+4)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!