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Vinvika [58]
3 years ago
13

the number of minutes spent studing are 60 70 45 60 80 35 45 find the measure of center that best represents the data justify yo

ur selection and then find the measure of center
Mathematics
2 answers:
dezoksy [38]3 years ago
4 0
There are three measures of center: mean, median, and mode.

The median would be the number in the middle when the numbers are ordered.
35 45 45 60 60 70 80

The mode would be the number that occurss most frequently.
Since 45 and 60 both appear twice, you take the mean of the two, which is 52.5

The mean would be the sum of all the numbers divided by the amount of numbers.
60+70+45+60+80+35+45 = 395/7 ≈ 56.43

You could really justify any of these, but typically you would use the mean in this case because there are no outliers.
Artist 52 [7]3 years ago
3 0
The measure of center is mean. You would be finding the average number of minutes spent studying.
To find the mean of the data you would add all of the numbers up and divide by the total amount of numbers you added.
60+70+45+60+80+35+45
=395
395/7
=<span>56.4285714286</span>
You might be interested in
If the correlation coefficient is .87, is its relationship considered to be strong positive,weak positive,strong negative,weak n
myrzilka [38]

Answer:

strong positive correlation co efficient

Step-by-step explanation:

<u>correlation:-</u>

A correlation co-efficient is a numerical measure of some type of correlation,meaning a statistical relationship between two variables.

<u>positive correlation:-</u>

Positive correlation occurs when an increase in one variable increases the value in another.

<u>Negative correlation:-</u>

negative correlation occurs when an increase in one variable decreases the value of another.

Strong positive correlation:-

A co-efficient of correlation of + 0.87 indicates a strong positive correlation between the independent variables

Strong negative correlation:-

A co-efficient of correlation of - 0.87 indicates a strong negative correlation between the independent variables.

Zero correlation:-

There is no relationship is called zero correlation

weak positive correlation:-

A co-efficient of correlation below 0.2 indicates a weak positive correlation between the independent variables.

weak negative correlation:-

A co-efficient of correlation below -0.2 indicates a weak negative correlation between the independent variables.

8 0
3 years ago
I need help plz someone help me solved this problem I need help ASAP! I will mark you as brainiest!
valina [46]

Answer: k = 12

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

x² + kx + 36 = 0

In order for x to have exactly one solution, it must be a perfect square.

(x + √36)² = 0

(x + 6)² = 0

(x + 6)(x + 6) = 0

x² + 6x + 6x + 36 = 0

x² + 12x + 36 = 0

 k = 12

8 0
3 years ago
What is 2+2 pls help
Alexandra [31]

Answer:

4

Step-by-step explanation:

2 + 2 += 4

This can be solved by addition.

7 0
2 years ago
Assume all variables and groupings are nonzero real numbers.
8_murik_8 [283]
ab^{-4}c^{-3}=\\&#10;\frac{a}{b^4c^3}&#10;&#10;
6 0
3 years ago
What is the measure in radians for the central angle of a circle whose radius is 5 and intercepted arc length is 7.2? Round your
Olegator [25]

Answer:

0.46\pi\ radians

Step-by-step explanation:

step 1

Find the circumference

The circumference of a circle is equal to

C=2\pi r

we have

r=5\ units

assume

\pi=3.14

substitute

C=2(3.14)(5)=31.4\ units

step 2

Find  the measure in radians for the central angle of a circle whose radius is 5 and intercepted arc length is 7.2 units

Remember that

The circumference of 31.4\ units subtends a central angle of 2\pi \ radians

so

using proportion

Let

x-----> the central angle in radians

\frac{2\pi}{31.4}=\frac{x}{7.2} \\ \\x=2\pi (7.2)/31.4\\ \\x=0.46\pi\ radians

7 0
3 years ago
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