OK, I have a casio fx-82ms. I've cleared the memory. I set the mode to sd. put in some numbers pressing M+ after each. Then, pressing shift 1 should give me mean while shift 2 the standard deviation.
But it comes up with the same. For standard deviation, on screen is:
x with line above.
1
Then another x and owith a line and an n all next to each other.
2
then the same as previous except -| at the end and:
3
What is wrong??
But it comes up with the same. For standard deviation, on screen is:
x with line above.
1
Then another x and owith a line and an n all next to each other.
2
then the same as previous except -| at the end and:
3
What is wrong??