Question:
The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the:
(i) Highest and the lowest marks obtained by the students.
(ii) Range of the marks obtained.
(iii) Mean marks obtained by the group.
The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the:
(i) Highest and the lowest marks obtained by the students.
(ii) Range of the marks obtained.
(iii) Mean marks obtained by the group.
(i) Highest and the lowest marks obtained by the students.
(ii) Range of the marks obtained.
(iii) Mean marks obtained by the group.
Updated On: Jul 11, 2024
Hide Solution
Verified By Collegedunia
Solution and Explanation
The marks obtained by the group of students in a science test can be arranged in ascending order as follows. 39, 48, 56, 75, 76, 81, 85, 85, 90, 95
(i) Highest marks = 95
Lowest marks = 39
(ii) Range = 95 - 39 = 56
(iii) Mean marks = \(\frac{(85 + 76 + 90 + 85 + 39 + 48 + 56 + 95 + 81 + 75) }{10}\) = \(\frac{730}{10}\) = 73
(i) Highest marks = 95
Lowest marks = 39
(ii) Range = 95 - 39 = 56
(iii) Mean marks = \(\frac{(85 + 76 + 90 + 85 + 39 + 48 + 56 + 95 + 81 + 75) }{10}\) = \(\frac{730}{10}\) = 73
Was this answer helpful?
3
0
Top Questions on Arithmetic Mean
- If each term of a geometric progression \( a_1, a_2, a_3, \dots \) with \( a_1 = \frac{1}{8} \) and \( a_2 \neq a_1 \), is the arithmetic mean of the next two terms and \( S_n = a_1 + a_2 + \dots + a_n \), then \( S_{20} - S_{18} \) is equal to
- JEE Main - 2024
- Mathematics
- Arithmetic Mean
- Which of the following is a correct relation if and only if all the n observations are equal?
- CUET (PG) - 2023
- Mathematics
- Arithmetic Mean
- Given below are two statements:
Statement I: Arithmetic mean of a given set of observations is their sum divided by the no. of observations.
Statement II: If in a series the sum of 5 number is 17, then the Arithmetic Mean of it will be 3.4±0.5. In the light of the above statements,
choose the correct answer from the options given below:- CUET (PG) - 2023
- Mathematics
- Arithmetic Mean
- If no value of an ungrouped data is repeated, then which of the following cannot be determined?
- TS POLYCET - 2023
- Mathematics
- Arithmetic Mean
- Find the missing value of "p" from the following table when Arithmetic Mean is 3.55.
X 1 2 3 4 5 6 F 8 9 p 16 9 8 - TS POLYCET - 2023
- Mathematics
- Arithmetic Mean
View More Questions
Questions Asked in CBSE Class VII exam
- What letters of the English alphabet have reflectional symmetry (i.e., symmetry related to mirror reflection) about.
- a vertical mirror
- a horizontal mirror
- both horizontal and vertical mirrors
- CBSE Class VII
- Lines Of Symmetry For Regular Polygons
- In a class test (+3) marks are given for every correct answer and (–2) marks are given for every incorrect answer and no marks for not attempting any question. (i) Radhika scored 20 marks. If she has got 12 correct answers, how many questions has she attempted incorrectly? (ii) Mohini scores –5 marks in this test, though she has got 7 correct answers. How many questions has she attempted incorrectly?
- CBSE Class VII
- Properties Of Division Of Integers
Match the items given in Column I with one or more items of Column II.
Column I Column II (a) A plane mirror (i) Used as a magnifying glass. (b) A convex mirror (ii) Can form image of objects spread over a large area. (c) A convex lens (iii) Used by dentists to see enlarged image of teeth. (d) A concave mirror (iv) The image is always inverted and magnified. (e) A concave lens (v) The image is erect and of the same size as the object. - (vi) The image is erect and smaller in size than the object. - CBSE Class VII
- Spherical Mirrors
- Identify the numerical coefficients of terms (other than constants) in the following expressions:
(i) 5 – 3t2
(ii) 1 + t + t2 + t3
(iii) x + 2xy + 3y
(iv) 100m + 1000n
(v) – p2q2 + 7pq
(vi) 1.2 a + 0.8 b
(vii) 3.14 r2
(viii) 2 (l + b)
(ix) 0.1 y + 0.01 y2- CBSE Class VII
- Algebraic Expressions
- Find the value of:
(i) -4÷\(\frac{2}{3}\)
(ii) -\(\frac{3}{5}\)÷2
(iii) -\(\frac{4}{5}\)÷(-3)
(iv) -\(\frac{1}{8}\)÷\(\frac{3}{4}\)
(v) -\(\frac{2}{13}\)÷\(\frac{1}{7}\)
(vi) -\(\frac{7}{12}\)÷(-\(\frac{2}{13}\))
(vii) \(\frac{3}{13}\)÷(-\(\frac{4}{65}\))- CBSE Class VII
- Operations On Rational Numbers
View More Questions