Statistics & Probability Midterm Review (Periods 7 & 9)

To evaluate customer satisfaction, a grocery store gives double coupons to anyone who completes a survey as they enter the store. The store manager determines that customers are very satisfied with their shopping experience in his store.

• Unbiased

• Biased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A public library asked every 10th person who entered to name the type of book they were getting.

• Biased

• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Shape?

• Skewed right
• Skewed left
• Symmetric
• Unimodal

What is the shape of this bar graph?

• Skew right

• Skew left

• Symmetrical

• uniform

How many cities have temperatures between 70 degrees and 99 degrees?

• 44
• 34
• 26
• 62

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Order the dot plots from least to greatest standard deviation.

• A, D, C, B

• B, C, D, A

• A, D, B, C

• B, C, A, D

Use the following information and the Empirical Rule to estimate the answer.

The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.

Find the percentage of golfers that are between 30 and 46 years old.

• 68%

• 94%

• 95%

• 99.7%

Tags

CCSS.HSS.ID.A.4

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/11
• 5/6
• 1/3
• 5

Tags

CCSS.7.SP.C.7B

You spin the spinner. How many possible outcomes are there?

• 4

• 8

• 1

• 6