Statistics for Data Science I, Week-wise practice

Undated, Set week-02

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Question 1

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The mode of payment used of 100 people was recorded:

$\begin{array}{|l|c|}\hline \text{Category} & \text{Frequency}\\ \hline \text{Cash} & 26 \\ \text{Card} & 27 \\ \text{UPI} & 8 \\ \text{Wallet} & 39 \\ \hline \end{array}$

What is the relative frequency of "Card"? (Give the answer as a decimal, correct to 2 decimal places.)

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The mode of payment used of 100 people was recorded: $$\begin{array}{|l|c|}\hline \text{Category} & \text{Frequency}\\ \hline \text{Cash} & 26 \\ \text{Card} & 27 \\ \text{UPI} & 8 \\ \text{Wallet} & 39 \\ \hline \end{array}$$ What is the relative frequency of "Card"? (Give the answer as a decimal, correct to 2 decimal places.) The mode of payment used of 20 people was recorded: $$\begin{array}{|l|c|}\hline \text{Category} & \text{Frequency}\\ \hline \text{Cash} & 2 \\ \text{Card} & 9 \\ \text{UPI} & 6 \\ \text{Wallet} & 3 \\ \hline \end{array}$$ What percentage of the people chose "Card"? The mobile phone brand owned of 50 people was recorded: $$\begin{array}{|l|c|}\hline \text{Category} & \text{Frequency}\\ \hline \text{Samsung} & 13 \\ \text{Apple} & 8 \\ \text{Redmi} & 5 \\ \text{Vivo} & 8 \\ \text{Oppo} & 16 \\ \hline \end{array}$$ Which category is the mode?