Car price vs. Student GPA: Is there a correlation?

Car price vs. Student GPA:Is there a correlation?

Group 9Traci MechamKristina HightJonathan FisherMorgaine AbawiKiffen Davis

For Salt Lake Community College students who own a car, is the price

for their car related to their GPA?

Sampling Method: Simple Random

Strata: Jordan, Taylorsville and South City Campuses◦ 50 samples from each

campus. Price of car recorded as

price paid when purchased and current GPA was used.

Data Collection

Well over half of the students had cars in the < $20,000 range

Only a very small number had cars costing over $30,000

Price of Car Histogram

Car Price Box PlotAs you can see the box plot is skewed heavily to the

right, due to the high number of relatively moderate priced vehicles in conjunction with a few in the higher price range.

The mean price of a car was $12,523 while the range was over $50,000

Price of car stats

The ranges with the most students were 3.0-3.24 3.5-3.74

The majority were over 3.0.

GPA Histogram

GPA Box Plot

This box plot is skewed to the left due to infrequency of students with a low GPA

Grade Point Average Stats

The mean GPA was 3.36, and ranged from 2.0 to 4.0

Avg. Car Price, GPA, Sample Size

• The bar series represents the Avg. Car Price of students with the specified GPA• The line series represents the number of samples collected for the GPA• The error bars represents the standard deviation of Car Prices across all sample GPAs

2.25 2.5 2.75 3 3.25 3.5 3.75 4$0.00

$2,000.00

$4,000.00

$6,000.00

$8,000.00

$10,000.00

$12,000.00

$14,000.00

$16,000.00

0

10

20

30

40

50

60

Car Price, GPA - Scatterplot

• Each plot point on the graph represents a survey sample• Samples are distributed by the Car Price on the Y-axis and the GPA on the X-axis

2 2.5 3 3.5 4 4.5 $-

$10,000.00

$20,000.00

$30,000.00

$40,000.00

$50,000.00

$60,000.00

f(x) = − 358.298668088054 x + 13032.2645723559

Car Price - GPA

Car Price

Linear (Car Price)

Our study was unable to find any correlation between the GPA and price of vehicle for Salt Lake

City Community College students and concludes that the two variables appear to be unrelated

RESULTS