Prob/Stats- Chapter 1

You are thinking about purchasing an iPhone. Before making a decision, you contact the major service providers (AT&T, Sprint, Verizon, etc.) in your area to obtain some information. For each service provider, you record the cost of the iPhone, the required length of the service contract, whether the plan includes data, the period of the billing cycle (weekly, monthly, yearly, etc.) and the average cost per month.

Identify the individuals?

• Service providers

• Length of contract

• Average cost per month

• Cost of phone

• Whether or not the plan incudes data

You are thinking about purchasing an iPhone. Before making a decision, you contact the major service providers in your area to obtain some information. For each service provider, you record the cost of the iPhone, the required length of the service contract, whether the plan includes data, the period of the billing cycle (weekly, monthly, yearly, etc) and the average cost per month.

Which of the following is a categorical variable?

• Service providers

• 
  Cost of phone

• Whether or not the plan includes data

• Length of contract

• Billing cycle

You are thinking about purchasing an iPhone. Before making a decision, you contact the major service providers in your area to obtain some information. For each service provider, you record the cost of the iPhone, the required length of the service contract, whether the plan includes data, the period of the billing cycle (weekly, monthly, yearly, etc) and the average cost per month.

Which of the following are quantitative variables?

• Service providers

• Cost of phone

• Average cost per month

• Length of contract

• 
  Whether or not the plan includes data

Which of the following statements is NOT true?

• There were 30 participants recorded in this data set

• The frequency of Math is equivalent to Social Science, Science, and English combined

• On a bar chart that starts at 0, the bar for Math will be 3 times taller than the bar for English

• The relative frequency for math is 0.75

• The relative frequency for Social Science, Science, and English, will be the same

Tags

CCSS.6.RP.A.3A

Describe what the dots above the 17 represents

• That seventeen students scored 2 points

• That student #17 out of 21 scored 2 points

• That two students scored 17 points

• That student #17 out of 21 took the quiz two times

What percent of students scored at least 18 points? (Round to the nearest first decimal)

• 71.4%

• 57.1%

• 14.3%

• 28.6%

Tags

CCSS.6.RP.A.3C

Describe the distribution of the dot plot.

• Symmetrical

• Skewed Right

• Skewed left

• Bimodal

Which of the following statements are true.

• There are high outliers

• There are no outliers

• There are low outliers

• The data has a range of 9

• The center is at 20

When strawberries are thawed there is a tendency to lose some juice in the process. A recent study was done to try to reduce the loss of juice during thawing. The data below gives the percentage of juice lost after thawing for 12 different strawberry varieties from that recent study.

2.8, 4.1, 4.1, 4.2, 4.4, 4.4, 4.6, 4.8, 5.0, 5.0, 5.3, 5.6

Which of the following correctly represents a stemplot of the data given assuming the stem is the ones place and the leaves are the tenths place.

• 
• 
• 
• 

Which of the values is part of the data set?

• 4

• 41

• 52

• 5

• 54