Question
Q1. Here are the travel times of 20 randomly chosen SEU students: 10, 30, 5, 25, 40, 20, 10, 15, 30, 20, 15, 20, 75,
Q1. Here are the travel times of 20 randomly chosen SEU students:
10, 30, 5, 25, 40, 20, 10, 15, 30, 20, 15, 20, 75, 15, 65, 15, 60, 60, 40, 45.
Construct a stem and leaf diagram of the given data.
Q2. Construct a relative frequency histogram from the following frequency table.
Height | Frequency |
59.5-61.5 | 4 |
61.5-63.5 | 0 |
63.5-65.5 | 8 |
65.5-67.5 | 2 |
67.5-69.5 | 18 |
69.5-71.5 | 2 |
71.5-73.5 | 2 |
73.5-75.5 | 4 |
Q3. Calculate the median, mean and mode for the set:
{26, 31, 21, 29, 32, 26, 25, 28}
Q4. It was found that families bought milk in the following quantites in a particular week.
Milk Quantity (Litres) | Number of families |
1 | 3 |
3 | 3 |
5 | 4 |
7 | 14 |
9 | 7 |
11 | 4 |
13 | 3 |
15 | 4 |
Find the mean and standard deviation.
Q5. Consider a pack of 52 playing cards. A card is selected at random. What is the probability that the card is either a diamond or a King?
Q6. Two Dice are thrown 100 times and the sum are recorded in each throw. The recorded outcomes are as follows
Sum (x) | Frequency(f) |
2 | 7 |
3 | 6 |
4 | 7 |
5 | 12 |
6 | 22 |
7 | 18 |
8 | 8 |
9 | 3 |
10 | 4 |
11 | 5 |
12 | 8 |
Construct the probability distribution.
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