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Mathematics Diagnostic Assessment
Question 12

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The data below shows the number of teas served each day in a cafe over the last 2 weeks.

[tex]\[
\begin{tabular}{|l|l|l|l|l|l|l|}
\hline
140 & 102 & 80 & 139 & 36 & 98 \\
\hline
112 & 73 & 116 & 90 & 40 & 88 \\
\hline
\end{tabular}
\][/tex]

Complete the tally chart below and fill in the frequency column.

[tex]\[
\begin{tabular}{|c|c|c|}
\hline No. of Teas & Tally & Frequency \\
\hline $1-50$ & & \\
\hline $51-100$ & & \\
\hline $101-150$ & & \\
\hline
\end{tabular}
\][/tex]


Sagot :

Certainly! Let's break the data into the tally chart and complete the frequency column given the number of teas served each day in the café.

Here is the data for reference:

| 140 | 102 | 80 | 139 | 36 | 98 |
|-----|-----|----|-----|----|----|
| 112 | 73 | 116 | 90 | 40 | 88 |

We will classify these values into three ranges:

1. 1-50
2. 51-100
3. 101-150

We need to count how many values fall into each range.

### Step-by-Step Solution:

1. Counting the teas in the range 1-50:
- 36
- 40

Thus, there are 2 teas in the range of 1-50.

2. Counting the teas in the range 51-100:
- 80
- 98
- 73
- 90
- 88

Thus, there are 5 teas in the range of 51-100.

3. Counting the teas in the range 101-150:
- 140
- 102
- 139
- 112
- 116

Thus, there are 5 teas in the range of 101-150.

Now, we fill in the frequency column in the tally chart accordingly:

[tex]\[ \begin{array}{|c|c|c|} \hline \text{No. of Teas} & \text{Tally} & \text{Frequency} \\ \hline 1-50 & \text{II} & 2 \\ \hline 51-100 & \text{IIIII} & 5 \\ \hline 101-150 & \text{IIIII} & 5 \\ \hline \end{array} \][/tex]

So the completed tally chart would be:

[tex]\[ \begin{array}{|c|c|c|} \hline \text{No. of Teas (Range)} & \text{Tally} & \text{Frequency} \\ \hline 1-50 & II & 2 \\ \hline 51-100 & IIIII & 5 \\ \hline 101-150 & IIIII & 5 \\ \hline \end{array} \][/tex]
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