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mixas84 [53]
2 years ago
6

Find the mode and median of the data. A. mode = 41 median = 72 B. mode = 72 median = 94 C. mode = 94 median = 94 D. mode = 94 me

dian = 72

Mathematics
2 answers:
SashulF [63]2 years ago
7 0
Mode means the number that apperss the most
median is the number in the middle when you arrange them in numerical order


ok so
you take the unbers fom the left most collumn and pair it with each number in the right side of the line, the left collumn is the tens place and the right hand side is the ones

so the th enumbers are

32,41,41,50,56,57,62,70,70,72,72,72,73,74,91,92,94,94,94,94


mode=most common number
94 appears 4 times which is most
mode=94

median is number in very middle number
20 terms
72 is in middle


mode=94
72=median

D is answer

gizmo_the_mogwai [7]2 years ago
5 0

Answer:

D

Step-by-step explanation:

You take the numbers fom the left most collumn and pair it with each number in the right side of the line, the left collumn is the tens place and the right hand side is the ones.

So the the numbers are:

32,41,41,50,56,57,62,70,70,72,72,72,73,74,91,92,94,94,94,94

Mode = Most common number

94 appears 4 times which is most

Mode=94

Median is number in very middle number

20 terms

72 is in middle

Mode = 94

Median = 72

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Eric would like to buy a new math folder for $2.22 and a case of mechanical pencils for $2.95. He would also like to buy sticker
MrMuchimi

Answer:

0.5x+5.17:  10.00

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3 years ago
Read 2 more answers
Modern medical practice tells us not to encourage babies to become too fat. Is there a positive correlation between the weight x
Anna11 [10]

Answer:

a) Figure attached

b) y=1.31 x +98.57

c) The correlation coefficient would be r =0.47719

d) y=1.31 x +98.57=1.31*21 + 98.57 =126.08

Step-by-step explanation:

(a) Draw a scatter diagram for the data.

See the figure attached

(b) Find x, y, b, and the equation of the least-squares line. (Round your answers to three decimal places.) x =__ y =__ b =__ y =__ + __x

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

With these we can find the sums:

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=6576-\frac{300^2}{14}=147.429

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=38186-\frac{300*1773}{14}=193.143

And the slope would be:

m=\frac{193.143}{147.429}=1.31

Nowe we can find the means for x and y like this:

\bar x= \frac{\sum x_i}{n}=\frac{300}{14}=21.429

\bar y= \frac{\sum y_i}{n}=\frac{1773}{14}=126.643

And we can find the intercept using this:

b=\bar y -m \bar x=126.643-(1.31*21.429)=98.571

So the line would be given by:

y=1.31 x +98.57

(c) Find the sample correlation coefficient r and the coefficient of determination r?2. (Round your answers to three decimal places.)

n=14 \sum x = 300, \sum y = 1773, \sum xy=38186, \sum x^2 =6576, \sum y^2 =225649  

And in order to calculate the correlation coefficient we can use this formula:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}

r=\frac{14(38186)-(300)(1773)}{\sqrt{[14(6576) -(300)^2][14(225649) -(1773)^2]}}=0.9534

So then the correlation coefficient would be r =0.47719

What percentage of variation in y is explained by the least-squares model? (Round your answer to one decimal place.)

The % of variation is given by the determination coefficient given by r^2 and on this case 0.47719^2 =0.2277, so then the % of variation explaines is 22.8%.

(d) If a female baby weighs 21 pounds at 1 year, what do you predict she will weigh at 30 years of age? (Round your answer to two decimal places.) ___ lb

So we can replace in the linear model like this:

y=1.31 x +98.57=1.31*21 + 98.57 =126.08

7 0
3 years ago
There are 4grams of fiber in 1/2 cup of oats. how many grams of fiber are in 3 1/2 cuña of oats​
aleksklad [387]

Answer:

28 grams

Step-by-step explanation:

8 x 3 = 24

24 + 4 = 28

7 0
2 years ago
Add together 2350mm 3.42cm 11/2m and 1.45m
Artyom0805 [142]
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6 0
3 years ago
2. need help with this question
lara [203]

Answer:

First =  Poppy seed  = 3x10^-4 grams  = 0.0003 grams

Second  =  sesame seeds  =  3.64x10^-6 grams  = 0.00364 grams

third  = 250 pumpkin seeds 21 grams  = one seed 0.084 grams

Step-by-step explanation:

3.64x10^-6 kilograms *1000gr/Kilograms =  0.00364 grams

21/250 = 0.0084 grams one seeds

3 0
3 years ago
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