Roll a dice 20 times.
Record the results using tally marks.
Use probability words to represent each of the following outcomes below. Show your work.
so, what have you done so far?
Sure! Here are the steps:
1. Roll a dice 20 times.
Here are the results of each roll: 4, 2, 6, 1, 3, 5, 6, 2, 4, 1, 3, 6, 5, 1, 2, 6, 4, 3, 1, 5.
2. Record the results using tally marks.
Tally marks for each result:
4: ||||
2: |||
6: |||||
1: |||
3: |||
5: |||
3. Use probability words to represent each outcome.
The probability of rolling a 4 is 4/20 or 1/5.
The probability of rolling a 2 is 3/20.
The probability of rolling a 6 is 5/20 or 1/4.
The probability of rolling a 1 is 3/20.
The probability of rolling a 3 is 3/20.
The probability of rolling a 5 is 2/20 or 1/10.
To roll a dice 20 times and record the results using tally marks, you would need to follow these steps:
1. Take a lined piece of paper or a tally sheet and create five columns labeled 1 to 6, representing the possible outcomes of rolling a dice.
2. Draw a vertical line in each column to create five tally marks. This line represents one occurrence or roll of the dice.
3. Start rolling the dice 20 times and record the outcome of each roll by adding a tally mark in the corresponding column. For example, if you roll a 3, you would add a tally mark in the third column.
4. Repeat this process for all 20 rolls until you have recorded the results using tally marks.
After recording the results, you can use probability words to represent each of the following outcomes. Let's assume you rolled the dice and recorded the tallies:
- Outcome 1: Rolling a 1. Let's say you have 3 tally marks in the first column. The probability of rolling a 1 can be calculated by dividing the number of successful outcomes (3) by the total number of possible outcomes (20). Therefore, the probability of rolling a 1 is 3/20.
- Outcome 2: Rolling an even number. To calculate the probability, you need to add up the tally marks for 2, 4, and 6. Let's assume you have 9 tally marks for these numbers. The probability of rolling an even number can be calculated as 9/20.
- Outcome 3: Rolling a number greater than 4. To calculate the probability, you need to add up the tally marks for 5 and 6. Let's assume you have 6 tally marks for these numbers. The probability of rolling a number greater than 4 can be calculated as 6/20.
- Outcome 4: Rolling a number less than or equal to 2. To calculate the probability, you need to add up the tally marks for 1 and 2. Let's assume you have 5 tally marks for these numbers. The probability of rolling a number less than or equal to 2 can be calculated as 5/20.
By following these steps and using the tally marks to count the occurrences, you can calculate the probabilities for each outcome based on the 20 rolls of the dice.