The modal and mean mark of the frequency distribution is 5 and 4.83 respectively.
<h3>Mean and mode</h3>
Mode refers to a mark which reoccurs most in a frequency distribution.
The total number of students who wrote the test = 2 + 3 + 4 + 6 + 10 + 4 + 3 + 2 + 1 + 1
= 36 students
Mean mark = Total mark / Total students
= (2×1) + (3×2) + (4×3) + (6×4) + (10×5) + (4×6) + (3×7) + (2×8) + (1×9) + (1×10) / 36
= (2+6+12+24+50+24+21+16+9+10 / 36
= 174/36
= 4.83333333333333
Approximately,
Mean mark = 4.83
If 25% of students failed,
Number of students who failed = 25% of 36
= 25/100 × 36
= 0.25 × 36
= 9 students.
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Answer:
mean: 19
median: 22
mode: 5
range: 30
Step-by-step explanation:
hope this helps :)
Answer:
A
Step-by-step explanation:
Answer:
what is the question?
Step-by-step explanation:
- 4 1/3 = -(4*3+1)/3 =-13/3
-2 3/5 = -(5*2+3)/5 = -13/5
-13/3 divided by -13/5
-copy dot flip
-13/3 *-5/13
5/3
1 2/3
Choice A
