Table:
0
A
B
C
1
2019
High
Low
2
Fourth quarter
$21.17
$13.92
3
Third quarter
$17.02
$13.88
4
Second quarter
$16.72
$14.72
5
First quarter
$15.55
$11.78
6
2018
High
Low
7
Fourth quarter
$13.00
$10.77
8
Third quarter
$12.98
$11.30
9
Second quarter
$12.14
$9.80
10
First quarter
$10.30
$9.08

Questions and formulas:
Question: What was the increase / (decrease) in the 2019 fourth quarter between low to high?
Formula: B2 - C2
Formula2: B2 - C2
Level: Calculation
Question: What was the average 2019 third quarter for high and low?
Formula: (B3 + C3) / 2
Formula2: (B3 + C3) / 2
Level: Calculation
Question: What was the increase / (decrease) in the 2019 second quarter between low and high?
Formula: B4 - C4
Formula2: B4 - C4
Level: Calculation