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2 years ago

8

Why is it easier to use regression to predict the behavior of an index versus an individual stock?

1 answer:

densk [106]2 years ago

7 0

Hello, I am BrotherEye

Answer:

Regression models are predictive tools. If you want to use them to predict the behavior of an individual, you must set "behavior" as your dependent variable, and you must have indicators and measures for such. You must also identify your explanatory or independent variable likewise you must have indicators and measures for such.

If you have built your model on the basis of collected data, you will be able to predict the value of behavior given a value of the explanatory variable.

Step-by-step explanation:

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A random sample of 10 parking meters in a beach community showed the following incomes for a day. Assume the incomes are normall

Vlad1618 [11]

Answer: (2.54,6.86)

Step-by-step explanation:

Given : A random sample of 10 parking meters in a beach community showed the following incomes for a day.

We assume the incomes are normally distributed.

Mean income : $\mu=\dfrac{\sum^{10}_{i=1}x_i}{n}=\dfrac{47}{10}=4.7$

Standard deviation : $\sigma=\sqrt{\dfrac{\sum^{10}_{i=1}{(x_i-\mu)^2}}{n}}$

$=\sqrt{\dfrac{(1.1)^2+(0.2)^2+(1.9)^2+(1.6)^2+(2.1)^2+(0.5)^2+(2.05)^2+(0.45)^2+(3.3)^2+(1.7)^2}{10}}$

$=\dfrac{30.265}{10}=3.0265$

The confidence interval for the population mean (for sample size <30) is given by :-

$\mu\ \pm t_{n-1, \alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given significance level : $\alpha=1-0.95=0.05$

Critical value : $t_{n-1,\alpha/2}=t_{9,0.025}=2.262$

We assume that the population is normally distributed.

Now, the 95% confidence interval for the true mean will be :-

$4.7\ \pm\ 2.262\times\dfrac{3.0265}{\sqrt{10}} \\\\\approx4.7\pm2.16=(4.7-2.16\ ,\ 4.7+2.16)=(2.54,\ 6.86)$

Hence, 95% confidence interval for the true mean= (2.54,6.86)

7 0

3 years ago

If an arithmetic progression satisfies U4=7 , U8=15 .Find U10

Alja [10]

<em>Answer:</em>

<em>U10 = 19</em>

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

<em>The sequence is </em> $Ux=(x*2)-1$ <em />

<em>x is the coefficient to U.</em>

<em>So, </em> $U10=(10*2)-1$ <em />

<em>Which means </em> $U10=20-1$ <em />

<em>Which means </em> $U10=19$ <em />

<em>And there is your answer.</em>

<em>Hope this helps. Have a nice day.</em>

6 0

2 years ago

Nicola claims that the product of any fraction and 1616 will always be less than 1616. complete the sentences below about nicola

LUCKY_DIMON [66]

Can't see the answer choices but Nicola is wrong. 16 * (12/8) = 24>16

4 0

3 years ago

I will give BRAINLEST TO WHO ANSWER THIS

evablogger [386]

Answer:

64

Step-by-step explanation:

7 0

2 years ago

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What is the solution to -2(8x – 4) < 2x + 5?<br>він<br>x x<br>оооо<br>x x<br>заще<br>х: 6<br>о

lozanna [386]

Answer:

The answer to the question is x<3/18

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3 years ago