Question

Find the mean. The question is given.​

Answer 1

Answer:

= 4.15

Step-by-step explanation:

$1\frac{1}{4}, 2\frac{3}{4}, 8\frac{1}{2}, 3\frac{3}{4}, 4\frac{1}{2}$

$= \frac{5}{4}, \frac{11}{4}, \frac{17}{2}, \frac{15}{4}, \frac{9}{2}$

Making the denominators same, we get:

$= \frac{5}{4}, \frac{11}{4}, \frac{34}{4}, \frac{15}{4}, \frac{18}{4}$

Now, Mean= Sum of observation/ No of observation

Sum of observation $= \frac{5}{4}+\frac{11}{4}+\frac{34}{4}+\frac{15}{4}+\frac{18}{4}= \frac{83}{4}$

No. of observation= 5

Therefore, Mean= $\frac{\frac{83}{4} }{5}= \frac{83}{5*4} = \frac{83}{20}= 4.15$

Hope this helped you.... (^_^)