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PolarNik [594]
2 years ago
9

What is a chi-squared test?

Mathematics
1 answer:
Step2247 [10]2 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!

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What is the coefficient of x2 in this trinomial?
podryga [215]

Answer:

The coefficient is 1

Step-by-step explanation:

There is an imaginary 1 in front of variables that becomes the coefficient if there isn't already a number there. If it was 5x squared, the coefficient would be 5.

4 0
2 years ago
Amy has $8 less than Maria.Together they have $30
gtnhenbr [62]
 a + m = 30
a = m - 8

(m - 8) + m = 30
2m - 8 = 30
2m = 30 + 8
2m = 38
m = 38/2
m = 19

a = m - 8
a = 19 - 8
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so Amy has $11 and Maria has $ 19
8 0
2 years ago
a side if the triangle below has been extended to form an exterior angle of 130° . find the value of x
11111nata11111 [884]

Step-by-step explanation:

So, you have to get angle under 130° angle:

180°-130°= 50°

And you get X

x=180°-(113°+50°)

x=180°- 163°

x=17°

8 0
2 years ago
Determine the slope of the line in the graph below.​
Katarina [22]

Answer:

Step-by-step explanation:

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6 0
2 years ago
Read 2 more answers
What is the slope of the line with points A and B?
marshall27 [118]

Answer:

-1

Step-by-step explanation:

A = (0,0)

B = (1,-1)

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3 0
2 years ago
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