What is a chi-squared test?

Mathematics

1 answer:

Step2247 [10]3 years ago

4 0

Answer:

A chi-squared test, also written as χ² test, is a statistical hypothesis test that is valid to perform when the test statistic is chi-squared distributed under the null hypothesis, specifically Pearson's chi-squared test and variants thereof.

I hope it's helpful!

You might be interested in

$40 haircut; 15% tip

loris [4]

Answer:

Step-by-step explanation:

0.15 multiplied by 40

3 0

3 years ago

Read 2 more answers

Find the distance BF for the points B(1,-1) and F(-3,5)

Nadusha1986 [10]

Use the distance formula:
 $\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$

Plug in the given coordinates:
 $\sqrt{(-3-1)^2 + (5-(-1))^2}$

Simplify:
 $\sqrt{(-3-1)^2 + (5+1))^2}$

$\sqrt{-4^2+ 6^2}$

$\sqrt{16+36}$

$\sqrt{52}$
You can leave it as: $\sqrt{52}$ or in decimal form as: 7.2

6 0

3 years ago

Complete the square to make a perfect square trinomial. Then, write the result as a binomial squared. q^2+7q

viva [34]

Stay in school q^2*7q cuh

8 0

3 years ago

Special air bags are used to protect scientific equipment when a rover lands on the surface of Mars. On Earth, the function appr

Tema [17]

The acceleration due to gravity on earth is g = 32.174 ft/s².
Therefore on Mars,
g = (2/3)*32.174 = 21.45 ft/s²

When an object falls from rest over a distance h, the final velocity, v, obeys the equation
v² = 2gh
or
v = √(2gh)

Therefore, given h = 15 ft, the impact velocity on Mars is
v = √(2*21.45*15) = 25.367 ft/s
The closest given answer is 25.3 ft/s

Answer: B) 25.3 ft/s

5 0

3 years ago

Solve for J: 15(j-3)+3j<45

nata0808 [166]

15(j - 3) + 3j < 45
15j - 45 + 3j < 45
18j < 45 + 45
18j < 90
j < 90/18
j < 5

3 0

3 years ago