Question

Questions refer to the (incomplete) grouped frequency distribution below which depicts the mass (in kilograms) of 25 kittens and cats at a veterinarian. \begin{tabular}{|l|l|l|l|l|} \hline Mass (kg) & Number of cats (f) & \begin{tabular}{c} Midpoint \\ \( (\mathrm{m}) \) \end{tabular} & \( \mathrm{Fm} \) & \( \mathrm{fm}^{2} \) \\ \hline \( 0<2 \) & 3 & 1 & 3 & 3 \\ \hline \( 2<4 \) & 6 & 3 & 18 & 54 \\ \hline \( 4<6 \) & 10 & 5 & 50 & 250 \\ \hline \( 6<8 \) & 4 & 7 & 28 & 196 \\ \hline \( 8<10 \) & 2 & 9 & 18 & 162 \\ \hline S & 25 & - & \( A \) & \( B \) \\ \hline \end{tabular} QUESTION 12 The mode (in \( \mathrm{kg} \) ) is: A. 5.20 ?. 4.55 c 4.20 a. 4.80 QUESTION 13 The variance (in \( \mathrm{kg}^{2} \) ) is closest to: A. 3.04 B. 2.21 c 4.89 b. 5.27

          Questions refer to the (incomplete) grouped frequency distribution below which depicts the mass (in kilograms) of 25 kittens and cats at a veterinarian.
\begin{tabular}{|l|l|l|l|l|}
\hline Mass (kg) & Number of cats (f) & \begin{tabular}{c} 
Midpoint \\
\( (\mathrm{m}) \)
\end{tabular} & \( \mathrm{Fm} \) & \( \mathrm{fm}^{2} \) \\
\hline \( 0<2 \) & 3 & 1 & 3 & 3 \\
\hline \( 2<4 \) & 6 & 3 & 18 & 54 \\
\hline \( 4<6 \) & 10 & 5 & 50 & 250 \\
\hline \( 6<8 \) & 4 & 7 & 28 & 196 \\
\hline \( 8<10 \) & 2 & 9 & 18 & 162 \\
\hline S & 25 & - & \( A \) & \( B \) \\
\hline
\end{tabular}

QUESTION 12
The mode (in \( \mathrm{kg} \) ) is:
A. 5.20
?. 4.55
c 4.20
a. 4.80

QUESTION 13
The variance (in \( \mathrm{kg}^{2} \) ) is closest to:
A. 3.04
B. 2.21
c 4.89
b. 5.27

Questions refer to the (incomplete) grouped frequency distribution below which depicts the mass (in kilograms) of 25 kittens and cats at a veterinarian.

Mass (kg) Number of cats (f)
Midpoint

(m)
Fm fm^2

0<2 3 1 3 3

2<4 6 3 18 54

4<6 10 5 50 250

6<8 4 7 28 196

8<10 2 9 18 162

S 25 - A B

QUESTION 12
The mode (in kg ) is:
A. 5.20
?. 4.55
c 4.20
a. 4.80

QUESTION 13
The variance (in kg^2 ) is closest to:
A. 3.04
B. 2.21
c 4.89
b. 5.27

Added by Victor A.

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