alleryପ୍ରଥମ 10 ଟି ଗଣନ ସଂଖ୍ୟାର ହାରାହାରି ହେଉଛି:
A5.5
B5
C6
D6.5
Answer & Solution
Correct answer: A. 5.5
1. ପ୍ରଥମ 10 ଟି ଗଣନ ସଂଖ୍ୟା ହେଉଛି 1 ରୁ 10 ପର୍ଯ୍ୟନ୍ତ।
2. ସେଗୁଡ଼ିକର ଯୋଗଫଳ ହେଉଛି 10 x 11 / 2 = 55।
3. ହାରାହାରି ହେଉଛି ଯୋଗଫଳକୁ ସଂଖ୍ୟା ଦ୍ୱାରା ଭାଗ କରିବା, ଅର୍ଥାତ୍ 55 / 10।
4. ଏଥିରୁ 5.5 ମିଳିଥାଏ।
5. ଉତ୍ତର 5 ଦେବା ଅର୍ଥ ଅସାବଧାନତାବଶତଃ 1 ରୁ 10 ର ମଝି ମାନ ନେବା; ଏକ ଯୁଗ୍ମ ସଂଖ୍ୟକ ଗଣନା କ୍ଷେତ୍ରରେ ମାଧ୍ୟମାନ 5 ଏବଂ 6 ମଧ୍ୟରେ ଆସିଥାଏ।
_Source: syllabus Maths, Ch 13 'Statistics', S13.2 Mean of Grouped Data_
Keep practising Averages
Browse all Averages questions for RRB NTPC, or explore more Quantitative Aptitude topics.
Related questions
A batsman's average over 16 innings is 36. To raise the average to 38 in the 17th innings,The average of 15 numbers is 12. The first 8 average 11 and the last 8 average 14. The 8thIn a branch, 30 clerks average 60 marks and 20 officers average 70. The average of all 50 The average of 6 numbers is 8. If the number 12 is removed, the average of the remaining 5The class mark of the class interval 10-25 is:The average of 10 numbers is 45. A new number, 100, is added to the set. The new average iThe three measures of central tendency are:The mean of a set of observations is found by: