## MathSofiya Group Title Statistics I'm trying to create a Frequency Table. Please let me know if I'm doing it right. One minute please... one year ago one year ago

1. MathSofiya Group Title

$\quad \begin{array}{|c|c|c|c|c|} \hline \frac{\textrm{class limits}}{\textrm{lower-upper}} & \frac{\textrm{class boundary}}{\textrm{lower-upper}} & \frac{\textrm{class}}{\textrm{midpoint}} &\text{tally}&\text{frequency}&\frac{\text{cumulative}}{\text{frequency}}\\ \hline 1 & & \\ \hline & & 4&6 \\ \hline & 5 & 4\\ \hline & & \\ \hline & 1 & \\ \hline & 1& 2\\ \hline \end{array}$ this is not the actual table. I'm new to making tables with Latex. Those numbers are just place holders so that my table doesn't collapse...now to my questions...

2. MathSofiya Group Title

I found the class width to be 6 $\frac{43-0}{8}=5.375$ 34 21 37 31 10 24 39 10 17 18 32 17 3 10 6 5 6 6 13 22 25 3 5 2 9 3 0 4 29 26 5 5 24 15 3 8 16 9 10 3 12 10 10 10 11 12 13 1 9 43 13 14 32 24 15

3. MathSofiya Group Title

for the first column... so would I write 0-6 6-12 12-24 how do I know where to start the class limits? I know that I should add six to the upper and lower limit to get to the next limits, but where do i start?

4. CliffSedge Group Title

Well, one thing is you don't want the classes to overlap, so maybe 0-6, 7-13, 14-20, etc.

5. CliffSedge Group Title

It looks like discrete data, so you don't have to worry about continuity corrections.

6. MathSofiya Group Title

but I have to add 6 to the lower limit and to the upper limit. If I do what you did that would be adding 7 to each 0-6 7-13 Would that mean it doesn't matter where I start? could I do... 0-5 6-11 12-17 ?

7. CliffSedge Group Title

Yeah, I think since 0 is included in the data, 0-5, 6-11, .. would be better if you want to have 8 classes. It'll overshoot a little at the end, but will include all the data.

8. MathSofiya Group Title

Why would it overshoot at the end?

9. CliffSedge Group Title

8 classes with a width of 6 each would go to 47 (48-1 because starting count at 0)

10. CliffSedge Group Title

It's fine though, otherwise if you only had a width of 5, it would only go to 39 and that is less than your maximum value.

11. MathSofiya Group Title

will do. Thanks for your help!

12. MathSofiya Group Title

$\quad \begin{array}{|c|c|c|c|} \hline \frac{\textrm{class limits}}{\textrm{lower-upper}} & \frac{\textrm{class boundary}}{\textrm{lower-upper}} & \frac{\textrm{class}}{\textrm{midpoint}} &\text{frequency}&\frac{\text{cumulative}}{\text{frequency}}&\frac{f}{n}\\ \hline 0-5 & 0.0-5.5 &13 &13& 2.75&0.218\\ \hline 6-11& 5.5-11.5& 15&28& 8.5 &0.27\\ \hline 12-17&11.5-17.5& 11&39& 14.5 &0.2\\ \hline 18-23&17.5-23.5& 3 &42& 20.5 &0.054 \\ \hline 24-29&23.5-29.5& 6 &48& 26.5 &0.109\\ \hline 30-35&29.5-35.5& 4 &52& 32.5 &0.072\\ \hline 36-41&35.5-41.5& 2 &54& 38.5 &0.036\\ \hline 42-47&41.5-47.5& 1 &55& 44.5 &0.018\\ \hline \end{array}$