Question

pls solve this sum
Spammers will be reported ​

Answer 1

Answer:

summation of frequency : 960

Step-by-step explanation:

class interval : 10-20 20-30 30-40 40-50 50-60

mid value (x) :. 15. 25. 35. 45. 55

freqiency. (f) :. 5. 8. 10. 5. 2

summation :. 75. 200. 350. 225. 110

of (fx)

mean. :. 960