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julia-pushkina [17]
3 years ago
8

What is the median of the data set 30 52 68 65 69 61 68 75 85 78

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
4 0
Median is the number in the middle when all the numbers are put in order.
Let's do that first.
30 52 61 65 68 68 69 75 78 85
Now if there's 10 numbers, 2 numbers are in the middle.
By counting in 4 on both sides, we know the two numbers are both 68, so 68 is the median.
Natasha_Volkova [10]3 years ago
4 0

Answer:

Option C.

Step-by-step explanation:

The given data set is

30, 52, 68, 65, 69, 61, 68, 75, 85, 78

Arrange the data in ascending order.

30, 52, 61, 65, 68, 68, 69, 75, 78, 85

Number of observations n=10, which is an even number.

So, median of the data set is

Median=\dfrac{\frac{n}{2}th+(\frac{n}{2}+1)th}{2}

Median=\dfrac{\frac{10}{2}th+(\frac{10}{2}+1)th}{2}

Median=\dfrac{5th+6th}{2}

5th term =68 and 6th term =68.

Median=\dfrac{68+68}{2}

Median=\dfrac{136}{2}

Median=68

Median of the data is 68. Therefore, the correct option is C.

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3 years ago
A​ country's people consume 6.36.3 billion pounds of candy​ (excluding chewing​ gum) per year. Express this quantity in terms of
Vedmedyk [2.9K]
The correct question is
<span>A​ country's people consume 6.3 billion pounds of candy​ (excluding chewing​ gum) per year. Express this quantity in terms of pounds per person per month. Note that the population of the country is 301 million.

we know that
1 billion------------------> 1000000000 </span><span>(Thousand </span>Million)=1 x 10<span>^9
</span><span>then
</span>6.3 billion pounds--------------> 6.3 x 10^9 pounds
[pounds of candy per person per year]=[6.3 x 10^9 pounds]/[301 x 10^6]

[pounds of candy per person per year]=20.93 pounds per person per year

[pounds of candy per person per month]=20.93/12=1.74 pounds per person per month

the answer is 1.74 pounds per person per month

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3 years ago
What is the answer to this question?
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Step-by-step explanation:

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Which sample fairly represents the population? Check all that apply. measuring the heights of every fiftieth person on the schoo
LenKa [72]
A sample is a small subset of a population, on which startistical analysis is carried out to obtain the characteristics of the population.

Sampling is the process of selecting units (e.g., people, organizations) from a population of interest to obtain the characteristics of the population.

When drawing a sample, it is important that all the components of the population of interest is adequately represented.

Thefollowing samples are categorised based on whether they fairly represent the population of interest or not.

1.) M<span>easuring the heights of every fiftieth person on the school roster to determine the average heights of the boys in the school.

Here, the population of interest is the boys in the school. Drawing a sample of every fiftieth person on the school roster will contain both boys and girls whereas girls are not needed for the purpose of the survey.

Threfore, the sample does not represent fairly the population of interest.

2.) C</span><span>alling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment.

Here, the population of interest is the team members, so drawing a sample of every third person on the soccer team's roster represents fairly the population of interest.

3.) </span>O<span>bserving every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear glasses.

Here the population of interest is people who wear glasses, though observing people walking down the road might be a good way to drawing this sample, but the sample will be biased because by 5 pm, the sum will be down and the people who wear glasses because of the sun might not have their glasses on again.

So this sample does not fairly represent the population of interest.

4.) </span>Sending a confidential e-mail survey to every one-hundredth parent in the school district to determine the overall satisfaction of the residents of the town.

Here, the population of interest is the residents of the town and not all residents of the town might be a parent.

So, the sample of one-hundredth parent in the school district does not fairly represent the population of interest.

5.) T<span>aking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch.

Here, the population of interest is the students and taking a poll in the lunch room (where all students currently have to eat lunch) fairly represent the population of interest.


Therefore, the samples that fairly represent the population are:
</span>
<span>C<span>alling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment.
and
</span></span>T<span>aking a poll in the lunch room (where all students currently have to eat lunch) to determine the number of students who want to be able to leave campus during lunch.</span>
6 0
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Wanda created the poster shown below: What would be the dimensions of the poster at times its current size? (5 points) Select on
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