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olga nikolaevna [1]
3 years ago
7

Help ASAP! ill mark brainliest if correct

Mathematics
1 answer:
irina [24]3 years ago
5 0

Answer:

fourth option

Step-by-step explanation:

The mean is calculated as

mean = \frac{sum}{count}

         = \frac{15+16+21+23+25+25+25+39}{8}

        = \frac{189}{8}

       = 23.6 ( to 1 dec. place )

The median is the middle value of the data set. If there is no exact middle then it is the average of the values either side of the middle.

15  16  21  23  25  25  25  39

                    ↑ middle

median = \frac{23+25}{2} = \frac{48}{2} = 24

The mode is the value that occurs most often, that is 25

Thus

mean = 23.6 , median = 24 , mode = 25

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5(x – 10) = 30 – 15x<br> Solve
Doss [256]

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x=4

Step-by-step explanation:

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7 0
4 years ago
The table gives the scores of 6 students from a class of 25 in a competitive exam. the point estimate of the mean score for the
Ymorist [56]

The mean of the scores if 6 students in a competitive exam is 25 marks.

Given scores of 6 students are: 10,30,50,40,20 in a competitive exam.

We have to find out the mean of the mark of 6 students in a competitive exam.

Mean is the sum of all the values in a set of data, such as numbers, measurements, divided by the number of values. It is also known as average.

Mean=∑X/n

∑X=10+30+50+40+20

=150

N=6

Now to calculate the mean we have to divide 150 by number of students which is 6.

Mean=150/6

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Hence the mean of the scores of 6  students is 25 marks.

Learn more about mean at brainly.com/question/1136789

#SPJ4

Question is incomplete as it should include :

Marks of students =10,30,50,40,20.

8 0
2 years ago
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