Please answer the following questions without the explanations

Answer the following blanks

Question 1

Calculate the variance of the following data: 17, 18, 14, 23, 22, 16, 26, 18, 29, 21. Report to 1 decimal place.

Blank # 1

Question 2

Calculate the variance of the following data: 9, 13, 14, 18, 7, 17, 6, 8, 12, 5. Report to 1 decimal place.

Blank # 1

Answer the following choices

Question 3

You collect a sample of weight data from two groups of 20 individuals each. Your planned statistical test requires normally distributed data. To check this assumption, you would use which test?

Group of answer choices

Kolmogorov-Smirnov test on each group separately

Levene's test on both groups together

Levene's test on each group separately

No testing is necessary; data can be assumed to be normally distributed

Question 4

You collect weight data from 12 individuals and run a Kolmogorov-Smirnov test, finding a p-value of _______. You therefore fail to reject the null hypothesis and conclude that ___________.

Group of answer choices

p=0.032; the data are not normally distributed

p=0.032; the data are normally distributed

p=0.632; the data are not normally distributed

p=0.632; the data are normally distributed

Question 5

You collect a sample of food intake data (calories/day) from two samples of 12 individuals each. Your planed statistical test assumes equal variances. To check this assumption, you would use which test?

Group of answer choices

Q-Q plot on each group separately

Q-Q plot on both groups together

Shapiro-Wilk test on both groups together

Levene's test on both groups

Question 6

You collect height data from 15 men and 15 women and run a Levene's test. The resulting p-value is ______, therefore you reject the null hypothesis and conclude that _____________.

Group of answer choices

p=0.032; the variances are not equal

p=0.032; the variances are equal

p=0.632; the variances are not equal

p=0.632; the variances are equal

Question 7

You collect data on height, weight, and body mass index from 15 young males, 15 young females, 15 older males, and 15 older females. Young individuals are 18-35 and older individuals are 65-85. You wish to determine the impact of age group and sex on these anthropometric measurements. "Age group" is an example of a ____________.

Group of answer choices

continuous dependent variable

continuous independent variable

categorical dependent variable

categorical independent variable

Question 8

You collect data on height, weight, and body mass index from 15 young males, 15 young females, 15 older males, and 15 older females. Young individuals are 18-35 and older individuals are 65-85. You wish to determine the impact of age group and sex on these anthropometric measurements. "Body mass index" is an example of a ____________.

Group of answer choices

continuous dependent variable

continuous independent variable

categorical dependent variable

categorical independent variable

Question 9

You assign 20 male and 20 female mice to run in a running wheel (10 mice per sex) or remain sedentary (10 mice per sex). Within each of these groups, you split them further in half and assign each to a dietary supplement or placebo, thus giving you the following groups: (1) male/exercise/supplement, (2) male/exercise/placebo, (3) male/sedentary/supplement, (4) male/sedentary/placebo, (5)-(8) the female equivalent groups. You follow these mice over the course and record the following information: weight change (difference from pre-intervention to post-intervention) and food intake (average in grams/week). You also perform a preference test for sugar water at the end of the study, and record the number of times each mouse chooses to consume sugar water (vs. regular water) when given the choice. The sugar water choice test is presented 5 times to each mouse. "Weight change" is an example of a _____________.

Group of answer choices

continuous dependent variable

continuous independent variable

categorical dependent variable

categorical independent variable

Question 10

You assign 20 male and 20 female mice to run in a running wheel (10 mice per sex) or remain sedentary (10 mice per sex). Within each of these groups, you split them further in half and assign each to a dietary supplement or placebo, thus giving you the following groups: (1) male/exercise/supplement, (2) male/exercise/placebo, (3) male/sedentary/supplement, (4) male/sedentary/placebo, (5)-(8) the female equivalent groups. You follow these mice over the course and record the following information: weight change (difference from pre-intervention to post-intervention) and food intake (average in grams/week). You also perform a preference test for sugar water at the end of the study, and record the number of times each mouse chooses to consume sugar water (vs. regular water) when given the choice. The sugar water choice test is presented 5 times to each mouse. "Diet" (supplement or placebo) is an example of a _____________.

Group of answer choices

continuous dependent variable

continuous independent variable

categorical dependent variable

categorical independent variable

Question 11

You survey samples of students in 4 different sections of a large first-year English course, and record their ratings of instructor effectiveness (on a 1-5 likert scale) for 5 different effectiveness questions. Likert responses are __________ variables.

Group of answer choices

categorical

continuous

independent

discrete