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Anettt [7]
3 years ago
13

Mathematical symbols are critical to the discipline of statistics. A symbol can help identify which distribution and what type o

f characteristic is being measured. The lower case Greek letter 'sigma' is which of the following?
Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0

Answer: sigma is used for measuring Population Standard Deviation.

Step-by-step explanation:

The lower case Greek letter 'sigma' is denoted by the symbol ( \sigma).

This symbol indicates the Population Standard Deviation of the data. Standard deviation means how much variation or dispersion is there in our data. Squaring of standard deviation gives us Variance which is denoted by the symbol \sigma ^{2} .

Formula for Population Standard deviation ( \sigma) is = \sqrt{\frac{\sum (x_i-\mu )^{2}}{N}} ,

                                where x_i = each value from our list of data

                                           \mu = Population mean of data

                                          N = Number of observations in our data

Standard deviation can never be negative and it is very much sensitive to outliers in our data.

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Joelle is working on a school report in a word processor. She wants to place a figure which is 13.09 cm wide so it apperars cent
irga5000 [103]

Hello Croary

We would first need to subtract 13.09cm from  21.59cm which will be 8.5cm, with the left over space, divide in half

<u><em>8.5/2 = 4.25cm</em></u>

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6 0
3 years ago
A car travels 17 miles on one gallon of gas
zmey [24]

When x =170, y =10, when x = 187, y = 1, when x = 204, y = 12, when x = 221, y = 13, when x = 238, y = 14, when x = 255, y = 15, when x = 272, y = 16, when x = 289, y = 17, when x = 306, y = 18, when x = 323, y = 19, when x = 340, y = 20,

Step-by-step explanation:

Step 1; Assume y is the gallons in the tank while x is the range of the car. We need to determine the equation relating the y to the x values in the given coordinates. x is the dependent value whereas y is the independent value i.e. the value of x depends on the value of y.

Step 2; As y increases, x also increases. For every extra gallon in the tank, the car can go another 17 miles. So with y as the amount of gas in the tank in gallons and x as the range of vehicle, we get;

x = 17y, this represents the relation between x and y.

To find the gallons in the tank, y = \frac{x}{17},

For x = 170, y = \frac{170}{17} = 10,

Similarly equating the values we get that when x = 187, y = 11,

when x = 204, y = 12,

when x = 221, y = 13,

when x = 238, y = 14,

when x = 255, y = 15,

when x = 272, y = 16,

when x = 289, y = 17,

when x = 306, y = 18,

when x = 323, y = 19,

when x = 340, y = 20,

8 0
3 years ago
Rick has $20.00. He bought a movie ticket for $5.50, a large popcorn for $3.75, a large soda for $2.75. How much money does he h
Juli2301 [7.4K]

Answer:

$8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Help! What is the answer to: <br> 4x^2 + 9x - 1 = 0
nataly862011 [7]
I hope this helps you




a=4


b=9


c= -1



disctirminant =b^2-4ac


disctirminant =9^2-4.4. (-1)


disctirminant =97


x1=-9+square root of 97/2.4= -9+square root of 97/8


x2= -9-square root of 97/2.4= -9-square root of 97/8
6 0
3 years ago
Read 2 more answers
Opposite reciprocal slope lines or parallel or perpendicular
GarryVolchara [31]


-- If two lines on a graph are parallel, then their slopes are equal.

-- If two lines on a graph are perpendicular, then their slopes are
negative reciprocals.


6 0
3 years ago
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