# stats

IQO

The Highway Loss Data Institute routinely collects data on collision coverage claims. Collision coverage claims insures against physical damage to an insured individual’s vehicle. The data represents random collision coverage claims based on data obtained from the Highway Loss Data Institute for 2007 models. Find and interpret the first, second, and third quartiles for collision coverage claims.

 \$6751 \$9908 \$3461 \$21,147 \$2332 \$2336 \$189 \$1185 \$370 \$1414 \$4668 \$1953 \$10,034 \$735 \$802 \$618 \$180 \$1657

Quartile 1: _____

Quartile 2: _____

Quartile 3: _____

Interpretation (Explain):

Chi Square

Domestic violence incidents are not rare and may cause marriages to end. Happiness in relationships may be a key ingredient to mitigating DV. Is there a relationship between marriage and happiness? The data shows the marital and happiness of individuals who participated in the General Social Survey. Complete the expected counts within each cell, and make a decision. Test whether marital status and happiness are independent at the 95% level of significance.

Marital

Status

MarriedWidowedDivorced/Separated

Never

Married

Total

Very happy60063112144 HappinessPretty happy720142355459  Not to happy9351119127

Total

Chi Square

Starting July 1, 2013, MOC will be a smoke free campus. The following data represents the smoking status by level of education for residents of the United States 18 years or older from a random sample of 11054 residents.

Test whether smoking status and level of education are independent at the 95% level of significance.

Construct a distribution of smoking status by number of years of education using a bar chart. Does this evidence support your conclusion?

StatusTotal

Never

88

12

69

442544

343351

Total

 Number of years of Education Smoking Current Former <12 178 208 137 143 13-15 16 or more

Week 3 Homework

IQO

The Highway Loss Data Institute routinely collects data on collision coverage claims. Collision coverage claims insures against physical damage to an insured individual’s vehicle. The data represents random collision coverage claims based on data obtained from the Highway Loss Data Institute for 2007 models. Find and interpret the first, second, and third quartiles for collision coverage claims.

 \$67 51 \$9908 \$ 34 61 \$21,147 \$2 33 2 \$2336 \$189 \$1185 \$370 \$1414 \$4668 \$1953 \$10,034 \$735 \$802 \$618 \$180 \$1657

Quartile 1: _____

Quartile 2: _____

Quartile 3: _____

Interpretation (Explain):

Chi Square

Domestic violence incidents are not rare and may cause marriages to end.

Happiness

in relationships may be a key ingredient to mitigating DV. Is there a relationship between marriage and happiness? The data shows the marital and happiness of individuals who participated in the General Social Survey. Complete the expected counts within each cell, and make a decision. Test whether marital status and happiness are independent at the 95% level of significance.

Total

 Marital Status Married Widowed Divorced/ Separated Never Married Total Very happy 600 63 1 12 1 44 Happiness Pretty happy 720 142 355 459 Not to happy 93 51 119 127

Chi Square

Starting July 1, 2013, MOC will be a smoke free campus. The following data represents the smoking status by level of education for residents of the United States 18 years or older from a random sample of 11054 residents.

Test whether smoking status and level of education are independent at the 95% level of significance.

Construct a distribution of smoking status by number of years of education using a bar chart. Does this evidence support your conclusion?

Status

Total

44

51

Total

 Number of years of Education Smoking Current Former Never <12 178 88 208 12 137 69 143 13-15 44 25 16 or more 34 33