The arithmetic mean of the following data is given
by
\begin{tabular}{|l|l|l|l|l|l|}
\hline Vari....
The arithmetic mean of the following data is given
\( \mathrm{P} \)
by
\begin{tabular}{|l|l|l|l|l|l|}
\hline Variate \( (x) \) & 0 & 1 & 2 & 3 & \( \ldots n \) \\
\hline Frequency \( (f) \) & \( { }^{n} C_{0} \) & \( { }^{n} C_{1} \) & \( { }^{n} C_{2} \) & \( { }^{n} C_{3} \) & \( \ldots{ }^{n} C_{n} \) \\
\hline
\end{tabular}
W
(1) \( \frac{1}{2}(n+1) \)
(2) \( \frac{1}{2} n \)
(3) \( \frac{2^{n}}{n} \)
(4) \( \frac{2^{n-1}}{n} \)
π²PW App Link - https://bit.ly/YTAI_PWAP
πPW Website - https://www.pw.live
Other Videos By PW Solutions
| 2024-01-22 | The variance of \( \alpha, \beta \) and \( \gamma \) is 9 , then the variance of
\( 5 \alpha, 5 .... |
| 2024-01-22 | Let \( x_{1}, x_{2}, \ldots, x_{n} \) be ' \( n \) ' observations. Let \( w_{i}=l x_{i}+k \)
for.... |
| 2024-01-22 | Match the following columns
\begin{tabular}{|l|l|c|c|}
\hline \multicolumn{1}{|c|}{ Column-I } &.... |
| 2024-01-22 | The mean of five observations is 4 and their
variance is 5.2. If three of these observations are.... |
| 2024-01-22 | The weighted mean of first \( n \) natural numbers whose
weight are equal to the squares of corr.... |
| 2024-01-22 | Consider the following distribution:
\begin{tabular}{|l|l|l|l|l|l|}
\hline Size \( \left(x_{i}\r.... |
| 2024-01-22 | The mean and median of the following number in
increasing order
\( 3,4,6, x, 10, y \) are ' 7 ' .... |
| 2024-01-22 | The weighted mean of first \( n \) natural numbers whose
weight are equal to the squares of corr.... |
| 2024-01-22 | In the series of \( 2 n \) observations, half of them each equal to \( a \) and remaining half e.... |
| 2024-01-22 | The mean and variance of 5 observations of an
experiment are 4 and 5.2 respectively. If from the.... |
| 2024-01-22 | The arithmetic mean of the following data is given
by
\begin{tabular}{|l|l|l|l|l|l|}
\hline Vari.... |
| 2024-01-22 | Let \( x_{1}, x_{2}, \ldots . x_{n} \) be \( \mathrm{n} \) observation such that
\( \sum x_{i}^{.... |
| 2024-01-22 | If the standard deviation of \( x_{1}, x_{2}, \ldots x_{n} \) is 3.5 , then
the standard deviati.... |
| 2024-01-22 | Probability that ' \( A \) ' speaks truth is \( 4 / 5 \). A coin is
tossed. ' \( A \) ' reports .... |
| 2024-01-22 | The mean of the following freq. table is 50 and
\( \Sigma \mathrm{f}=120 \)
\begin{tabular}{|l|l.... |
| 2024-01-22 | The mean deviation about median from the
following data \( 340,150,210,240,300,310,320 \), is.... |
| 2024-01-22 | 10 is the mean of a set of 7 observations and 5 is the
mean of a set of 3 observations. The mean.... |
| 2024-01-22 | Let A \& B are two independent events such that P(A)
\( =\frac{1}{3} \) and \( \mathrm{P}(\mathr.... |
| 2024-01-22 | The probability of guessing correctly at least 8 out
of 10 answers on a true - false examination.... |
| 2024-01-22 | The mean of two groups of sizes 200 and 300 are 25 and 10 respectively. Their standard deviation.... |
| 2024-01-22 | The variance of first 20 -natural number is.... |
0