✓ Board-verified
Mathematics · 2024 · 1 mark
CBSE 2024 · Region 1 · Set 1 · Q9
For some data x_1, x_2, … … x_n with respective frequencies f_1, f_2, ….. f_n, the value of Σ_1^n f_i(x_i-x̄) is equal to:
For some data $\displaystyle x_{1}, x_{2}, \ldots \ldots x_{n}$ with respective frequencies $\displaystyle f_{1}, f_{2}, \ldots . . f_{n}$, the value of $\displaystyle \sum_{1}^{n} f_{i}\left(x_{i}-\bar{x}\right)$ is equal to :
Official answer
(D)
$\displaystyle 0$
More from Statistics
- In a test, the marks obtained by 100 students (out of 50) are given below: Marks obtained: 40-50 Find the mean marks of the students.2024
- In a test, the marks obtained by 100 students (out of 50 ) are given below: Marks obtained: 0-10 10-20 20-30 30-40 40-50 Number of students: 12 23 34…2024
- Find the missing frequency 'f' in the following table, if the mean of the given data is 18. Hence find the mode.2025
- Find the mean and median for the following data:2025
- If the mean and the median of a data are 12 and 15 respectively, then its mode is:2023
- The distribution below gives the marks obtained by 80 students on a test: The modal class of this distribution is:2023
- If the mean and the mode of a distribution are 15 and 18 respectively, then the median of the distribution is:2023
- Find mean and mode of the following frequency distribution: OR If the median of the distribution given below is 28.5, find the values of x and y.2026
CBSE Class 10 Mathematics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.