Regression question: What is the adjusted R2 of this model? According to this model, what would be the forecast for Fizzy Ice Creams on a Sunday in which average temperature is 89 degrees Fahrenheit?

Sarah believes that demand for her Fizzy Ice Creams will be determined by temperature and day of the week. She has built a regression model to predict Fizzy Ice Creams demand using the following two variables:

• Variable 1: Temperature
• Variable 2: Weekday or not

Demand data for the last 30 days is available in Table 3, as well as average daily temperature (in Farenheit) and day of the week information.

What is the adjusted R2 of this model?

According to this model, what would be the forecast for Fizzy Ice Creams on a Sunday in which average temperature is 89 degrees Fahrenheit?

Table 3:

Day	Demand	Temperature	Day of the week
1	88	88	Monday
2	87	93	Tuesday
3	74	83	Wednesday
4	88	73	Thursday
5	86	74	Friday
6	122	83	Saturday
7	85	70	Sunday
8	66	78	Monday
9	56	77	Tuesday
10	52	70	Wednesday
11	66	67	Thursday
12	78	69	Friday
13	114	71	Saturday
14	90	75	Sunday
15	52	69	Monday
16	56	76	Tuesday
17	63	80	Wednesday
18	53	78	Thursday
19	74	67	Friday
20	90	79	Saturday
21	90	84	Sunday
22	64	84	Monday
23	50	84	Tuesday
24	79	69	Wednesday
25	87	79	Thursday
26	64	81	Friday
27	116	78	Saturday
28	87	82	Sunday
29	76	74	Monday
30	88	77	Tuesday