Data (2) Flashcards

1
Q

The x axis in a scatter graph

A

Independent variable

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2
Q

Independent variable

A

The x axis in a scatter graph

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3
Q

The y axis in a scatter graph

A

Dependent variable

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4
Q

Dependent variable

A

The y axis in a scatter graph

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5
Q

Calculate the PMCC on a calculator

A
Menu
6
y= a + bx
Input values
AC
OPTN 
Regression Calc
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6
Q

x̄ meaning?

A

Mean value of x

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7
Q

Mean value of x

A

x̄ meaning?

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8
Q

Get equation of a regression line

A
Menu
6
y= a + bx
Input values
AC
OPTN 
Regression Calc

Substitute a and b values into y = a + bx

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9
Q

What is interpolation

A

Values inside the range in a scatter graph

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10
Q

Values inside the range in a scatter graph

A

What is interpolation

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11
Q

What is extrapolation?

A

Values outside the range in a scatter graph

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12
Q

Values outside the range in a scatter graph

A

What is extrapolation?

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13
Q

Find mean from ungrouped data

A
Menu
6
1
Shift and setup
Go to statistics
Turn frequency on
Input x and freq
AC
OPTN
2
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14
Q

Another way to express 12 <= x < 13 in grouped data

A

11.5 <= x < 13.5

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15
Q

`11.5 <= x < 13.5

A

Another way to express 12 <= x < 13 in grouped data

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16
Q

Find lower quartile in grouped data

A

Total frequency / 4

17
Q

Total frequency / 4

A

Find lower quartile in grouped data

18
Q

How is variance represented on a calculator?

A

(σ^2)x

19
Q

(σ^2)x

A

How is variance represented on a calculator?

20
Q

How is standard deviation represented on a calculator?

A

σx

21
Q

σx

A

How is standard deviation represented on a calculator?