Best Fit Quiz
REMEMBER!

Type data tables in
STAT EDIT.

Use 4:LinReg(ax+b)
for line of best fit

Use 5:QuadReg for
curve or quadratic of
best fit
Mrs. Hall looked at gas prices for the last 3 years.
What is the line of best fit for the equation above?
y = 0.235x + 3.68
y = 0.235x + 3.25
y = 0.235x + 3.14
y = 0.235x + 2.96

Based on your line of best fit, what will be the price of

gas in 50 years (Hint: year 53)?

Mrs. Hall looked at gas prices for the last 3 years.

$12.75

$14.23

$15.42

$17.99

Write an equation for the line of best fit.

The chart below compares the total calories of a

sandwich based on the total fat in the sandwich.

y = 13.138x +159.88

y = 13.138x +144.73

y = 13.138x +98.79

y = 13.138x +110.11

Based on your equation, how many total calories would

a crispy chicken sandwich have at 25 grams of fat?

The chart below compares the total calories of a

sandwich based on the total fat in the sandwich.

432

456

507

473

The distance a marble has traveled down a slanted

board was measured by a 3rd grade class.

What is the quadratic curve of best fit?

y = .5 - 0.06x - 0.03

y = .5x2 + 0.06x + 0.03

y = .5x2 - 0.06x + 0.03

y = .5x2 + 0.06x - 0.03

The distance a marble has traveled down a slanted

board was measured by a 3rd grade class.

Based on the curve of best fit, estimate the distance

the marble will travel in 20 seconds.

152

175

199

215

Bomani's math club has been fundraising to prepare

for the upcoming Science Meets Math demonstration.

What is the equation for the line of best fit?

y = 17.27x + 23.255

y = 17.27x + 25.181

y = 17.27x + 27.893

y = 17.27x + 30.112

Bomani's math club has been fundraising to prepare

for the upcoming Science Meets Math demonstration.

Based on the equation, how much money will they

have saved at week 12?

$175.40

$163.25

$197.55

$230.50

The average hourly wage for a technical worker over a

10-year period is shown belox. 

What is the quadratic curve of best fit for the

information?

y = 0.002x2 + 1.246x + 5.633

y = 0.002x2 + 1.246x + 8.279

y = 0.002x2 + 1.246x + 10.675

y = 0.002x2 + 1.246x + 13.772

The average hourly wage for a technical worker over a

10-year period is shown belox. 

Based on the curve of best fit, estimate the hourly

wage of the worker at 20 years.

$25.25

$28.17

$34.12

$36.40

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