Knowledge Base

Solution 33731: Calculating Two-Variable Statistics on the TI-36X Pro.

How do I calculate Two-Variable Statistics on the TI-36X Pro?

To calculate two-variable statistics on the TI-36X Pro, please refer to the example below:

Example:

L1{10,25,30,40}
L2{5,30,50,70}

To enter the data, please follow the steps below:

• Press [data].
• Under L1, input [1] [0] [enter] [2] [5] [enter] [3] [0] [enter] [4] [0] [enter].
• Press the right arrow once and input [5] [enter] [3] [0] [enter] [5] [0] [enter] [7] [0] [enter].

To calculate the statistical variables, please follow the steps below:

• Press [2nd] [Stat-reg/distr].
• Press 3: 2-Var Stats.

Ensure that under X Data [L1] is highlighted.
Ensure that under Y Data [L2] is highlighted.
FRQ should be at ONE.

• Scroll down to CALC and press [enter].

Answers should be as follows:

n = 4
x = 26.25
Sx = 12.5
sx = 10.82531755
y = 38.75
Sy = 27.80137886
sy = 24.07670036
åx= 105
åx² = 3225
åy = 155
åy² = 8325
åxy = 5100
a = 2.2
b = -19
r = 0.9891595714
x'(
y'(
minX = 10
maxX = 40
minY = 5
maxY = 70

 

Please see the TI-36X Pro guidebook for additional information.